About The Product
1. LINEPAUDIO B877 personal listener. Designed for players who want to listen to their voices via headphones or earphones, such as their vocal and musical instruments, mainly for drummers, who need to mix click tracks with listener signals. Church choir singing and others needs to listen to the sound of their music. All 3 stereo channels personal monitor desk headphone mixer,
2. Three input channels are outputted by 1/4 and 1/8 (6.5 and 3.5 mm) of headphone holes through various level controllers, and the microphone channel and device output are connected to ground switches. Easy to eliminate the current ground buzzing noise. This product is an ideal choice for live band and church musicians as well as studio musicians and singers. It has the ability to customize the main music and the voice and instrument input of musicians. Make the product become an effective and multifunctional listening device.
3. Line input: 1/4 TRS stereo Jack for connecting line level signal sources, such as mixer listening / auxiliary output, cassette player output, CD player output, and etc.
4. Ground connecting: Plug jumper to disconnect the chassis grounding input of microphone pin 1 and the microphone passes through.
5. The microphone: XLR Jack is in parallel with the microphone input Jack (hardwired) for delivery to the mixer or other microphone-level input device.
6. Microphone input: XLR balanced Jack for connecting capacitors or moving-coil microphones.
7. Device input: 1/4 TRS stereo Jack for connecting device or line level signals, such as guitar processors, keyboards, musical instruments, keyboards, or previous outputs of musical instruments.
8. Mono / stereo jumper: Select whether the input Jack is mono or stereo.
9. Left / right output: Transformer balanced XLR output from device input.
10. hGrounding route: A plug jumper used to disconnect the chassis from the output Jack of the 1/4 RS device.
11. Mono / stereo jumper (located below the line input): select whether the line input Jack is mono or stereo.
12. Note: The interface of the XLR Jack under MONO mode can be used for "Phantom Power" which is required to connect the mixer.
13. Headset output: 1/4 stereo Jack and 1/8 stereo Jack for connecting stereo headphones or headphones.
14. Line level: Adjust the level signal from the line input to the headphone mixing.
15. Microphone level: Adjust the level signal from microphone input to headphone mixing.
16. Inst. level: Adjust the level signal from inst. input to headphone mixing.
17. The line input is connected to a 1/4 "stereo or mono plug." If the plug is 6.35mm stereo, select the mono / stereo jumper set by stereo. The plug is a single-ended mono channel. Select mono / stereo jumper settings.
18. Microphone input is connected to a dynamic microphone or capacitive microphone via a standard XLR cable. If you are using a capacitive microphone, you need to charge it with power from the mixer connected to the microphone Jack. This Jack transmits the phantom power from the mixer to the microphone. Connect the microphone through the Jack to the mixer as needed.
19. Instrument input is connected to the guitar preamplifier output, keyboard or any stereo or monophonic instrument signal. Select stereo or mono.

Features
1. Max input level: -20 dB XLR, +40dB line, +15dB instrument.
2. Input impedance: 50K ohms
3. Output frequency response: 10-30kHz +/-3dB
4. Output impedance HDPHN: 10ohms
5. Output impedance: 2 ea; 100ohms balanced
6. Gain: 20 dB 1/4 inch, 50dB XLR
7. HDPHN frequency response: 20Hz-20kHz
8. S/N ratio: 90dB
9. Power: DC 9-16V
10. 1/4 TRS stereo / mono listening input.
11. The XLR microphone enters w/ pass-through.
12. 1/4 TRS stereo instrument input, 6.35mm / 3.5mm stereo / mono output.

About The Product
1. The LINEPAUDIO binary passive switch comparator uses an audio crossover circuit architecture which is a combination center of a pair of speakers and two channel audio signal switch controllers.
2. It provides you with the convenience and flexibility to listen to different loudspeakers and power amplifiers in power amplifier and speaker systems. Designed to provide your speakers with a lossless audio combination of audio amplifiers or home theater systems, the product unit features high-quality, precision manufactured loudspeaker connectors.
3. The product can accept up to 12 specifications connecting head wire combination control, in order to harvest maximum reliability and durability. Each channel can handle 200W RMS.
4. The product can support any conventional power amplifier or stereo receiver can drive multiple sets of speakers. There is no need to increase the external impedance matching device.
5. Switching the output signal does not affect the sound quality and volume loss of any other sound, and can be easily combined with any device.

Features
1. Listen to power amplifiers A or B through a pair of speakers.
2. A speaker 1 or 2 is heard from one of the two power amplifiers.
3. Compatible with all types of power amplifiers and speakers.
4. The input / output receives the heavy-duty speaker wire or speaker pin wire through the terminal port.
5. Press the speaker selection switch to the corresponding speaker 1 or speaker 2 position.
6. Press the amplifier selection switch to the corresponding amplifier A or amplifier 2 position.
7. Turn on your stereo device, the product does not need external power supply.
8. Fine steel housing, compact size suitable for any system.
9. Channel power: Up to 200W per channel.
10. The frequency response: 10Hz to 50kHz.

1. Bit depth: 16bit / 24bit
2. Signal to noise ratio: 105dbB
3. Dynamic range: 110dB
4. Input audio: PC-USB / Coaxial / Toslink digital audio
5. Output audio: left / right audio and 6.35mm headphones
6. Input audio connector: PC-USB, Toslink, 1XRCA (coaxial)
7. Output audio interface: 6.35mm headphones, 2XRCA (R / L)
8. Size: 165x97x33mm
9. Weight: 296 grams
10. Working temperature: 0 degree to + 70 degree
11. Power adapter: DC 12V 1A
12. Accessories: host, power supply 12V 1A, fiber optic cable, printing cable, 6.35 to 3.5 headphone cable, instruction manual

1. Durable and reliable.
2. Plug and play.
3. Connect method: With 4 mm banana plug connection; also direct crimping; 3mm binding post crimping hole; Diameter fo 2 panel holes: 12mm; 19mm hole space; 42mm long, 5mm screw shaft diameter, 19mm pitch;
4. Can be installed on panel within 5mm.
5. Material: alloy + ABS

1. Rated voltage: 12-18V
2. Rated power: 40W
3. Resolution: 47K
4. Distortion: 0.01%
5. Size: 14.00 x 11.50 x 4.00 cm; material: metal.
6. SNR: >=80dB
7. Amplifier type: AV amplifier
8. Rated response: 20Hz-20KHz

About The Product
1. LINEPAUDIO A967 Passive PreAmp Active Speak Volume Two-Channel Controller is small and compact, applicable to use with active speaker or PostAmp, supports full-balanced or single-ended signal I/O, equipped with a switch for easily switching I/O signal.
2. Infinitely picky about the sound quality, infinitely tolerant on music. Passive PreAmp Volume Controller makes the desktop simple.
3. Small size but great wisdom, LINEPAUDIO A967 is tiny but with a complete set of common interfaces, supports full-balanced audio signal regulation and single-ended audio signal regulation, and switches I/O signal.
4. Suitable for the decoder and speaker without volume regulation, with the balanced I/O, RCA I/O architecture and switch function enabled. Its PreAmp will not cause a loss of signal source. In general, the audio source signals out of the decoder reproduces the original signals. The large dynamic range will not cause a quality loss, but keep the original signal source intact.
5. The preferred choice of active speaker, more and more music fans are not satisfied with the sound quality performance of common multimedia speakers, but rather select professional active monitor speakers. But such speakers generally don't have a volume regulation knob, but have to use with PreAmp. Most active monitor headphones are used for the desktop near-field listening, but a common HiFi PreAmp is large and occupies a large area. Moreover, most are concerned about whether the timbre of PreAmp matches the speaker or not, whether the sound effect is ideal or not.
6. But from now on, LINEPAUDIO A967 Two-Channel Volume Controller perfectly addresses the above two concerns, LINEPAUDIO A967 is small and compact, the internal circuit architecture design will not cause a loss of sound quality, the internal power amplifier of active speaker is enough to drive the speaker, so that you can hear the most genuine timbre and quality of the speaker, free from the need of choosing a suitable PreAmp.

Features
1. Input/Output impedance: 10Kohms - 50Kohms.
2. Two-channel I/O switch, RCA and Balanced XRL I/O.
3. Input: RCA / Balanced XLR (switch).
4. Output: RCA / Balanced XLR (switch).

About The Product
1. LINEPAUDIO A966 is a high-quality eight-channel high-power headphone amplifier which perfectly drives various high-impedance pro monitor headphones, provides the performer with quality monitor sound quality, and enables the performer to get immersed in the show and fully present his own musical work. This product not only provides the function of headphone amplifier, in order to be more user-friendly, it has a built-in intercom function at the studio-level. When the sound engineer wants to communicate with the performer in a different room, just insert the microphone (intercom microphone) to easily issue to the performer various working instructions, what the engineer jus said will be transmitted to eight headphones.
2. It provides eight sets of stereo channel outputs to improve the sound quality control and amplification and the background noise is small, with a wide dynamic range without sonic boom, the output sound volume of each channel is controlled by sensitivity adjustment knob, each channel can drive 16ohms-600ohms headphone, lossless in the quality without distortion. The product also provides an independent 6.5mm stereo associated input port, which can be easily connected to other devices in the studio; furthermore, it provides one-channel microphone intercom function input function, allowing for an easy intercom in the internal channel.
3. The circuit has OP + BUG architecture and uses AC12V transformer power supply to ensure a strong drive.
4. The 16ohms-600ohms high-impedance headphone can be driven through the volume regulation knob, with full sound, calm bass, clear high frequency, without any signal sonic boom. It is a headphone distributer as well as a headphone amplifier, which can easily drive the 16ohms-600ohms headphone. It has extensive applications, including band rehearsal /studio recording/ home entertainment/music enjoyment/comparison of business headphone distribution.

Features
1. 4x 6.35mm Stereo headphone output port (optionally connected to the headphone of any impedance).
2. 4x 3.5mm Stereo headphone output port (optionally connected to the headphone of any impedance).
3. TS 6.35mm L and R input port (optionally connected to the signal sound sources such as computer sound card or mixing console).
4. TRS 6.35mm Stereo input port (optionally connected to the intercom such as microphone).
5. 4 Independent channels stereo volume output control knob.
6. Input impedance: 100KOhm.
7. Max. input level: +14dBV.
8. Output impedance: 47 Ohm at each output channel .
9. Power source: AC12V.
10. Frequency response: 20Hz - 20KHz.
11. SNR: > 107dB.
12. THD: < 0.08%.
13. IMD: < 0.01%.
14. Input port: Stereo 1/4 TRS plug, L and R channel, 1/4 TS plug.
15. Output port: 4x 6.35mm Stereo 1/4 headphone jack + 4x 3.5mm Stereo 1/8 headphone jack.

About The Product
1. The condenser microphone is the preferred option for sound engineers. LINEPAUDIO A963 Microphone provides professional and stable 48V power supply, compact and made of metals, equipped with XLR balanced I/O making it easier to connect the microphone with other devices.
2. The professional condenser microphone phantom power supply has some prominent advantages: a broad range of frequency band, straight response curve, high output, smaller non-linear distortion, and good transient response.

Features
1. Applicable to all condenser microphones, provide stable 48V power supply.
2. Provide 1x Balanced XLR condenser microphone input port.
3. Provide 1x Balanced XLR condenser microphone output port.

About The Product
1. LINEPAUDIO A962 fancier-level HiFi Vacuum Tube Power Headphone Amplifier PreAmp, made of Beijing classic quality 6J9-J vacuum tube, USB-PC supported ASIO sound effect software will give out more professional, full, open-stage, soft and smooth sound, especially applicable to voice, string music, light music, and classical music, the performance of different frequency points is so perfect! Fine at high frequency, strong at low frequency! Easily drive 16??-600 ?? headphone of any class, quiet background without any current background noise! Two sets of audio signal inputs, one is USB signal input (USB-PC), USB cable is connected to PC, plug and play without a drive, directly used as an upscale USB external sound card. The USB port can be also connected to any model of Android mobile phones with OTG function. The other is 3.5mm interface audio signal input and you can connect it to mobile phone, CD, lossless music player or other audio source devices. In case of simultaneous inputs of USB signal and 3.5mm interface signal, 3.5mm interface signal input is preferred.
2. LINEPAUDIO A962 has three sets of audio signals, simultaneously output to meet the interface of different devices (RCA/3.5mm/6.35mm), the output end will deliver to you a real HiFi experience, whether connected to your upscale headphone or speaker, or used as a timbre adjustable PreAmp to connect your digital power amplifier, multimedia speaker or various stereo devices, what a real PreAmp. Of course, if you want to try the timbre style of different tube amplifiers, this product can fully meet your requirement, compatible with E180F, 6688 and other tube models, you may exchange at will.
3. Many music fanciers are concerned about the background noise of vacuum tube headphone amplifier, but this product frees you from this concern, its performance in controlling background noise is extraordinary, the background is quiet after several tests and optimizations of the circuit design, without any current background noise, you will hear the purest, most natural, and most nostalgic sound. As to the testing of the current background noise: as it is known to all, the current background noise comes from two sources, one is the vacuum tube headphone amplifier, the other is the audio source or the audio cable (the audio cable makes it more likely to generate background noise), the correct procedure of testing the headphone amplifier is to disconnect the audio input cable, with power on, if the background of the headphone amplifier is quiet, it indicates that the headphone amplifier has a very high SNR. If unquiet, or this seriously affects you from listening music, it indicates that the headphone amplifier has a very low SNR.
4. Notes: An electronic interference device near the desktop may also affect the SNR. For example, if the vacuum tube power amplifier is placed near a wireless router or device, it may be interfered to some extent. Enclosed by an aluminum shell, miniaturized but exquisite, the front, rear panel is precisely processed by CNC machining center, you will get a terrific handle, the ultra-small volume will not occupy your desktop space too much. More than a multi-functional upscale high-fidelity USB sound card vacuum tube headphone amplifier, it is also a beautiful desktop ornament. All letters on the machine panels are printed using expensive laser carving and will never fade off.

Features
1. 2 sets of signal inputs (USB-PC and 3.5mm input), 3.5mm input is preferred.
2. 3 sets of stereo signal outputs: 3.5mm / 6.35mm / RCA simultaneous signal outputs, allowing you to connect different device interfaces.
3. USB: PC Supported ASIO sound effect software (ASIO drive to be installed)
4. Input power: >=1100mW (32ohms).
5. Matched headphone impedance: 16ohms-600ohms.
6. Frequency response: 20 kHz - 30kHz.
7. Support sampling rate: 16Bit - 32k Bit, 44.1kHz, 48kHz.

About The Product
Are you still using common headset to chat and sing on computer? Are you still directly inserting the microphone to sing on computer? Are you still having a headache for a good sound card? Are you still bothered by having no good singing device, although you are born with a good voice? The product adopts the top reverb chip, perfectly supports double chorus, independent control and user-friendly feature, manually regulates the voice volume, designs the universal RCA jack without drive, the aluminum alloy CNC shell has better shielding performance. The product integrates 6 features, with the most professional Karaoke device system:
1. The first powerful function: Professional reverb: an ordinary sound card has no reverb effect, and it goes without saying that the song directly from a microphone without reverb is unpleasant to hear.
2. The second powerful function: Pure KTV effects: The product not only has the reverb effect, but also has the real damping tone, so that your singing tone at home is as perfect as that in KTV.
3. The third powerful function: Audio amplification function: With A937 product, you can passionately sing at conference, stage and home.
4. The fourth powerful function: Connect musical instrument: With musical accompaniment, you can record and sing while playing guitar, oh year! It is absolutely a pleasure!
5. The fifth powerful function: Shield current interference: When a common microphone or headset or other device is directly inserted to the computer, a big current sound can be heard, with the unique product design and unique power shielded line, this function can filter out very pure sound, and the sound effect is comparable to the real concert.
6. The sixth powerful function: Independent control function: You can independently control the accompaniment volume and let you sing with ease.
A933 is a multi-functional analog sound console, more than merely a microphone effector, it is also a preamplifier system, Karaoke or reverberator, and the powerful hardware special reverb effect not only plays the music on computer or other audio player, but also allows you to hear the perfect combination of your voice and music like a professional singer. In addition, the product also enables mixing, reverb, delay, reverb volume regulation and other functions of professional sound console. In this way, you can easily become the DJ of yourself, make independent control, mellow bass, exercise your affection and understanding to music to the fullest, without delay, without noise, the sound will be clean and transparent, or mellow and charming! The unique middle and high-end microphone optimized design which is popular in the market will perfectly fulfill your degree of professionalism.

Features
1. Support reverb, mix, echo, delay and other Karaoke special effects.
2. Use external power supply, universal power supply DC12V.
3. Support pure recording or mixing, alternatively used for independent PC or family recording connection device.
4. Support a variety of sound cards (PC integrated sound card, external independent USB sound card).
5. Support two sets of microphone input (6.3mm TRS), enable the simultaneous double singing function.
6. Support a set of output (headphone or speaker).
7. Support high-quality microphone amplifier, support multimedia microphone, dynamic microphone, self-powered capacitor microphone.
8. Support TS or TRS input.
9. Two sets of control knobs, one for microphone volume, and the other for reverb volume.
10. A set of Music in RAC stereo jacks, a set of Music out RCA stereo jacks, a set of video I/O RCA jacks.
11. Audio I/O: RCA stereo jack.
12. Power supply: Universal power supply DC 12V.

Package List
1 x A933 Mini Karaoke sound console.
1 x 3.5mm plug to 3.5mm plug (length: 150cm).
2 x 3.5mm bus to RCA (length: 50cm).
1 x 100-240V power adapter (DC 12V), American Standard, power cord length: 100cm.

1. Rated voltage: 12-18V
2. Rated power: 40W
3. Resolution: 47K
4. Distortion: 0.4%
5. Size: 15.30 x 10.00 x 3.50 cm; material: metal.
6. SNR: >=80dB
7. Amplifier type: HIFI amplifier

B017 – 6 Input 1 Output Audio Signal Selection Switcher Output Volume Adjustment Control 3.5mm Interface
Product description:
6-channel stereo audio signal selection switcher with output volume adjustment function,
The product adopts passive design, direct insertion, and has lossless switched transmission of input and output signals,
The product is mainly used to select and switch among a variety of stereo signal input and output through a common set of equipment, that is, a variety of stereo signal sources of devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player, need to be output on the amplifier or on active speakers,
The 6-channel audio signal selection switcher solves complicated line plug in and plug out, which uniformly connects device input signal sources to the switcher for easily selection.
The product uses standard 3.5mm interface design for input and output, and uses precise 6-level manual switch design for the switcher, with independent stereo volume adjustment control.
Product parameters:
Power supply: passive design, direct insertion
Material: all-metal case
Input and output impedance: 10KΩ - 50KΩ
Frequency response: 20 – 20kHz
Distortion: <0.002%
Insertion loss: <0.01dB
Signal gain: 0dB
Signal to noise ratio S/N: >98dB
Input port: standard 3.5mm interface
Output port: standard 3.5mm interface
Number of input channels: 6-channel stereo input signal sources
Number of output channels: 1-channel stereo output
Control switch: 6-level precise manual selection switch
Switching channel: 6 channels
Net weight: 0.26 kg
Gross weight with packaging: 0.36 kg
Product size: length 109mm X width 54 mm X height 40 mm
Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X 6 input 1 output stereo audio signal selection switcher output volume adjustment 3.5mm interface

B015 – Front Stereo Signal Amplifier Booster Headphones Speaker Amplifier Headset Dual-Audio Source
Product description:
You have a line level signal source (TV audio, MP3 player, Video game, mobile phone, tablet, computer, record player), but desire louder sound or bigger volume?
A powerful signal amplifier receiver or volume control, you may need a long line connecting TV audio and the receiver on the other side of the room to provide high gain through any line level signal source, allowing longer cable operation or requiring “buffer” to amplify the lower volume. You may use it between the line level signal source and power amplifier as a signal amplifier, 3.5mm + RCA port matches almost all product interfaces.
The product improves the sound amplification and reduces ground noise by controlling the signal, and it has large dynamic range without produce cracking. It controls output volume through a sensitive volume knob, the output of the headphone interface can drive 16Ω-600Ω headsets, and uses AC9V transformer for power supply to ensure full power.
Product parameters:
Input impedance: 100K Ohm
Maximum input level: +14 dBV
Output impedance: 47 Ohm of each output channel
Frequency response: 20 Hz – 20K Hz
Signal to noise ratio: > 107dB
Total harmonic distortion: < 0.08%
Intermodulation distortion: < 0.01%
Input port: stereo 3.5mm socket and RCA port
Output port: stereo 3.5mm port and RCA port
Power supply: AC9V
Net weight: 0.51 kg
Gross weight with packaging: 0.61 kg
Product size: length 109 mm X width 79 mm X height 39 mm
Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X stereo signal preamplifier booster dual-audio source headphone amplifier
1 X AC9V power adapter (AWG) line length 100cm

B027 – 6 input 2 output or 2 input 6 output audio signal source selection switcher 3.5mm interface
Product description:
6 input 2 output or 2 output 6 input stereo audio signal selection switcher, with RCA port design
The produce adopts passive design, with direct insertion, and has lossless switched transmission of input and output signals,
The product is mainly used to select and switch among a variety of stereo signal input and output through a common set or multiple sets of equipment, that is, a variety of stereo signal sources of devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player, need to be output on the amplifier or on active speakers,
The 6-channel audio signal selection switcher solves complicated line plug in and plug out, which uniformly connects device input signal sources to the switcher for easily selection.
The product uses standard 3.5mm interface design for input and output, and uses precise 6-level and 2-level manual switch design for the switcher,
Product parameters:
Power supply: passive design, direct insertion
Material: all-metal case
Input and output impedance: 10KΩ - 50KΩ
Frequency response: 20 – 20 kHz
Distortion: <0.002%
Insertion loss: <0.01dB
Signal gain: 0dB
Signal to noise ratio S/N: >98dB
Input port: standard 3.5mm interface
Output port: standard 3.5mm interface
Number of input channels: 6-channel stereo input (reverse 6-channel switched output)
Number of output channels: 2-channel stereo output (reverse 2-channel switched input)
Control switch: 6-level and 2-level precise manual selection switch
Input switching channel: 6 channels
Output switching channel: 2 channels
Net weight: 0.28 kg
Gross weight with packaging: 0.39 kg
Product size: length 122 mm X width 54 mm X height 39 mm
Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X 6 input 2 output or 2 input 6 output stereo audio signal selection switcher 3.5mm interface

B016 – 6 Input 1 Output Audio Signal Source Selection Switcher, Output Volume Adjustment Control RCA Port
Product description:
6-channel stereo audio signal selection switcher with output volume adjustment function,
The product adopts passive design, direct insertion, and has lossless switched transmission of input and output signals,
The product is mainly used to select and switch among a variety of stereo signal input and output through a common set of equipment, that is, a variety of stereo signal sources of devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player, need to be output on the amplifier or on active speakers,
The 6-channel audio signal selection switcher solves complicated line plug in and plug out, which uniformly connects device input signal sources to the switcher for easily selection.
The product uses standard RCA port design for input and output, and uses precise 6-level manual switch design for the switcher, with independent stereo volume adjustment control.
Product parameters:
Power supply: passive design, direct insertion
Material: all-metal case
Input and output impedance: 10KΩ - 50KΩ
Frequency response: 20 – 20kHz
Distortion: <0.002%
Insertion loss: <0.01dB
Signal gain: 0dB
Signal to noise ratio S/N: >98dB
Input port: standard RCA port
Output port: standard RCA port
Number of input channels: 6-channel stereo input signal sources
Number of output channels: 1-channel stereo output
Control switch: 6-level precise manual selection switch
Switching channel: 6 channels
Net weight: 0.25 kg
Gross weight with packaging: 0.35 kg
Product size: length 113 mm X width 50 mm X height 38mm
Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X 6 input 1 output stereo audio signal selection switcher, output volume adjustment RCA port

B026 – 6 Input 2 Output Or 2 Input 6 Output Audio Signal Source Selection Switcher RCA Port
Product description:
6 input 2 output or 2 output 6 input stereo audio signal selection switcher, with RCA port design
The produce adopts passive design, with direct insertion, and has lossless switched transmission of input and output signals,
The product is mainly used to select and switch among a variety of stereo signal input and output through a common set or multiple sets of equipment, that is, a variety of stereo signal sources of devices, such as TV audio, MP3 player, CD player, video game, mobile phone, tablet, computer, record player, need to be output on the amplifier or on active speakers,
The 6-channel audio signal selection switcher solves complicated line plug in and plug out, which uniformly connects device input signal sources to the switcher for easily selection.
The product uses standard RCA port design for input and output, and uses precise 6-level and 2-level manual switch design for the switcher,
Product parameters:
Power supply: passive design, direct insertion
Material: all-metal case
Input and output impedance: 10KΩ - 50KΩ
Frequency response: 20 – 20 kHz
Distortion: <0.002%
Insertion loss: <0.01dB
Signal gain: 0dB
Signal to noise ratio S/N: >98dB
Input port: standard RCA port
Output port: standard RCA port
Number of input channels: 6-channel stereo input (reverse 6-channel switched output)
Number of output channels: 2-channel stereo output (reverse 2-channel switched input)
Control switch: 6-level and 2-level precise manual selection switch
Input switching channel: 6 channels
Output switching channel: 2 channels
Net weight: 0.26 kg
Gross weight with packaging: 0.37 kg
Product size: length 122 mm X width 50 mm X height 38 mm
Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X 6 input 2 output or 2 input 6 output stereo audio signal selection switcher RCA port

B012 – Professional Stereo Signal Converted to Microphone Balanced Signal Output
Product description:
Professional 3.5mm interface stereo signal is converted to microphone balanced signal XLR interface, the product is equipped with an earthing switch to eliminate current humming noise. The product converts level signal from lines of audio equipment, such as laptop, MP3 player, CD players, mobile phones, and tablets, to a microphone balanced mixed signal output of left and right channels. The product has a regulatory function of volume control of level signal, 1/8” (3.5mm) TRS male input and 3-pin XLR male output.
Product parameters:
◆Independent unit converts audio device level signal input to microphone balanced signal XLR output
◆Output with independent level volume regulatory control switch
◆3.5mm male input and XLR male output, line length: 150M
◆The product adopts a high-performance transformer to eliminate voltage loop noise and reduce line noise
◆Compact metal case, which is suitable for performing tour, bringing wonderful sound for your numerous performances
◆Net weight: 0.23kg
◆Gross weight with packaging: 0.33kg
◆Product size: length 102mm X width 35mm X height 29mm
◆Packaging size: length 185mm X width 135mm X height 65mm
Kit list:
1 X Professional stereo signal converted to microphone balanced signal output

About The Product
1. Mini passive stereo mixer is a stereo four-way passive mixer for extended control tuning, mixing instrument, CD player, tape player, computer, mobile phone, tablet and so on. No battery or other power source required. The device can also be used as 1 In 4 Out stereo distributor clockwise to adjust the volume.
2. OUTPUT: is used to connect RCA jack to mixer output or other output devices.
3. IN 1-4: controls the signal level from input 1-4.
4. 4 groups of stereo RCA input and 1 group of stereo RCA output.
5. Four independently regulated 100K ohms potentiometers.

Feature
1. Input impedance: 10K ohms to 47K ohms
2. Output impedance: 2.5K ohms to 10K ohms
3. Gain: -12dB MAX

1. Mini type stereophonic non source sound mixture is one type stereophonic 8 ways non source sound mixing box
2. Use to expand the equipment interface to realize the tone tuning, sound mixture musical instrument, CD player, tape player, computer, mobile phone and PAD, etc.
3. Needn’t additionally connect power supply, 8 sets stereophonic input with independent volume adjustment switch. Output 2 sets select shift switch.
4. Sound mixture output able to connect tone tuning table, prepose amplifier, power amplifier and source loudspeaker box, etc.
5. Simple installation: input and output, able to be used once inserted, convenient to install, input and output signal no consumption, then can enjoy different hearing experience

Product Parameter:
1. Material: Metal
2. Color: Black
3. Interface: RCA interface
4. Power supply: Not need additionally connect power supply, able to be used once inserted
5. 8 sets stereophonic input with independent volume adjustment
6. 2 sets stereophonic select output with switch shift output (select 1 in 2 to output)
7. Input impedance: 10Kohms - 47Kohms
8. Output impedance: 2.5Kohms - 10Kohms
9. Output gain: -12dB (Connect power amplifier\prepose amplifier\tone tuning table\source loudspeaker after sound mixed)
10. Single product net weight: 0.42kg
11. Product size: length 172mm x width 68mm x height 38mm

About The Product
1. The LINEPAUDIO phone preamplifier adds phonograph functionality to any amplifier or receiver with standby auxiliary level input.
2. Prephonograph signal amplifier with AUX input and volume control, and AUX is with no signal amplification function.
3. The Phono preamplifier adds a phonograph function to any amplifier or receiver having standby AUX / CD / DVD audio line level input.
4. It can also be used to drive the disc directly into a mixer or a computer sound card. With its precise RIAA balance and 80 dB S / N ratio, the product can also be used to input the turntable directly into the sound system of the mixer or a computer. In order to switch auxiliary input to replace stereo or computer use, eliminating the need of connect and disconnect of the source signal as well as the sharing connection of the product. The sound quality of the preamplifier is easy to match or exceed the sound quality of the phonograph preamplifier built into a high-quality stereo component.
5. Product configuration switch function selects AUX input instead of stereo or AUX input port occupied on the computer. There is no need to connect or disconnect a shared input signal source of the product.
6. The output level control is very convenient to use the sound card and allows for the elimination of the largest signal difference between the switched signal sources.

Features
1. High quality RIAA phonograph preamplifier, for use with dynamic magnetic type jukebox.
2. Accurate and stable integrated circuit design.
3. Gold-plated head input and output connection RCA port, reliable performance.
4. Stylish, sturdy metal case to increase resistance of electrical noise.
5. The output level control allows the volume to be adjusted to provide signals from other sources.
6. Distortion ratio: 0.06% (max).
7. The frequency response is: + / -0.5dB, 20Hz - 20kHz.
8. Phonograph input impedance: Phono: 47K ohm - 200pF nominal.
9. Line input impedance: AUXL: 10K ohm.
10. Output impedance: 200 ohms.
11. Channel separation: 50dB.
12. Voice: 40dB (Phono) arbitrary signal source.
13. Phono sensitivity: 3.3MV.
14. Output: 300MV.
15. SNR: 85 dB.
16. Power supply: DC 12V 1A.

1. 4MM standard plug
2. Convert BNC cables with male plugs to stackable banana plugs for versatility
3. BNC connectors and banana plugs are molded directly to the wires, with tensile strength, durability, dust and moisture resistance
4. The BNC center contact is gold-plated beryllium copper, which is corrosion-resistant, low contact resistance and long insertion life
5. High safety and high temperature resistance
6. Length: about 21 cm

1. Low loss RF coaxial cable, flexible and portable, delicate and compact, strong anti-interference ability
2. Flexible cable, connector position can be adjusted according to the use of the scene
3. Compatible with RF applications, antennas, wireless LAN equipment, antenna extensions, WiFi signal boosting repeaters, GPS antennas, receivers, oscilloscopes, antenna tuners, frequency dividers and so on
4. Impedance: 50 ohm
5. Cable type: RG58
6. Cable length: 0.5/1/2/3/5/8/10m

1. It is made of high-quality materials and has a long service life
2. Multi-scenario use, computer peripherals, infrared cameras, household appliances, network communications
3. Simple operation, durable and practical
4. Using wire board connection method, firm and reliable
5. High temperature resistant flame retardant material
6. Wire core material: all copper wire
7. Voltage level: 12V
8. Insulation material: PVC
9. Insulation thickness: 0.3mm
10. Working temperature: -20 to 70 degrees celsius
11. Sheath thickness: 1mm
12. Number of cores: 2 cores

1. It is made of high-quality materials and has a long service life
2. Multi-scenario use, computer peripherals, infrared cameras, household appliances, network communications
3. Simple operation, durable and practical
4. Using wire board connection method, firm and reliable
5. High temperature resistant flame retardant material
6. Wire core material: all copper wire
7. Voltage level: 12V
8. Insulation material: PVC
9. Insulation thickness: 0.3mm
10. Working temperature: -20 to 70 degrees celsius
11. Sheath material: pvc
12. Sheath thickness: 1mm
13. Number of cores: 2 cores
14. Line length: 3m
15. Weight: 98.2g

1. Made of excellent materials, long service life
2. Multi-scene use, computer peripheral, infrared camera, household appliances, network communication
3. Simple operation, durable and practical
4. Adopt the wire board connection method, solid and reliable
5. High temperature resistant flame retardant material
6. Wire core material: bare copper wire
7. Voltage level: 250V
8. Insulation material: polyvinyl chloride
9. Insulation thickness: 0.5 mm
10. Operating temperature: -20 to 70 degrees Celsius
11. Sheath material: polyvinyl chloride
12. Sheath thickness: 0.85mm
13. Type: BNC male + 2 crocodile clips
14. Number of strands: 23/0.10x1C+48/0.12
15. Wire length: 3m

1. BNC Female Jack to Banana Female Jack RF Adapter Coaxial
2. Style: straight
3. Plating: nickel plating
4. Installation Type: Free Hanging
5. Impedance: 50ohm
6. Function: Used to connect BNC to Banana coaxial cable or equipment
7. Widely used in antenna, coaxial cable, LMR, wireless LAN equipment, can be connected to binding post by spade lug, banana plug or wire

1. BNC male socket to dual terminal 4mm banana bond connector
2. BNC connector for splicing two video cables together
3. BNC male to 2 banana plug female with silver-plated metal structure
4. Precision-manufactured BNC male-to-female connectors ensure long-lasting quality
5. Dimensions: about 57.5 x 22mm

1. BNC to BNC banana male coax zdapter linding post RF coax coax splitter connector
2. Binding posts for easy connection of test leads or add-on components for adapting single BNC plugs to dual banana jacks and providing isolation for four-terminal networks, screw type, no soldering required
3. Function: One side is BNC Female with inner hole, and the other side is two Banana Male plug binding posts, used to connect BNC to Banana RF coaxial cable or equipment
4. Widely used in antenna, coaxial cable, LMR, wireless LAN equipment, can be connected to binding post by spade lug, banana plug or wire
5. Dimensions: about 51 x 22mm

1. Material: Nickel-plated copper body; Gold-plated pins and holes.
2. Connector A: BNC female (no pin)
3. Connector B: UHF PL259 female (female thread, no pin)
4. Ideal for any project that requires the use of BNC and UHF connectors
5. Impedance: 50 ohms
6. Plug life: more than 1000 times

1. Material: pure copper + FEP
2. Gold-plated plug for enhanced corrosion resistance
3. Easy installation, saving time and effort
4. Ideal for any project that requires the use of UHF connectors
5. Note: Different lighting and monitors may cause the color of the item in the picture to be slightly different from the real one

1. Made of metal material, durable
2. Ideal for short-distance connections
3. Simple and professional wiring appearance
4. Easy installation, saving time and money
5. Multiple options for different applications
6. Applications: antenna, broadcasting, radio, telecommunications, etc.