new arrival Nobsound Little Bear MC102 Mini 2(1)-in-1(2)-Out 3.5mm Stereo Audio Switch Audio Switcher online sale Passive Speaker Headphone Manual online sale Selector Splitter Box Audio Sharing (Black) online

new arrival Nobsound Little Bear MC102 Mini 2(1)-in-1(2)-Out 3.5mm Stereo Audio Switch Audio Switcher online sale Passive Speaker Headphone Manual online sale Selector Splitter Box Audio Sharing (Black) online

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2(1)-IN-1(2)-OUT Audio Switch

  • Can be used as 2-IN-1-OUT (switch audio sources) / 1-IN-2-OUT (switch audio outputs)
  • No power and additional software required; Hot Swap (no need to reboot devices)
  • The AUX port between A & B is added according to some customers needs. But the opposite AUX port has priority.

Multi-Function Keys

  • A/B switch can conveniently select the device you want to use as the audio input or output
  • Mute button can mute the device with just one press

Volume Knob

  • Smooth volume control knob
  • Please note this is a fully passive device with no amplification. The max volume is the original sound. This knob can turn it to lower.

Super Mini Size

  • Super mini size and light wight
  • Can be easily placed on your desktop or be attached to your audio devices

Douk Audio MC102

Parameters

  • Interfaces: 3*3.5mm AUX jack
  • Weight: 100g / 0.22lb
  • Dimensions (L*W*H): 82*55*20mm / 3.23*2.17*0.79 in

Knobs and keys

  • 1 * volume knob
  • 1 * A/B selector
  • 1 * mute button

Packing List

  • 1 * audio selector
  • audio cable not included

Using Guide

Little Bear MC102 Little Bear MC1022 Little Bear MC104 Little Bear MC104 PRO Little Bear MC1024 Little Bear Mini MC1024
Feature 2(1)-IN-1(2)-OUT; Fully isolated switches with no interference 2(1)-IN-1(2)-OUT; Fully isolated switches with no interference 4(1)-IN-1(4)-OUT 4(1)-IN-1(4)-OUT; Fully isolated switches with no interference 2-Way; Support microphone 2-Way; Support microphone; Fully isolated with no interference
Ports 3.5mm AUX RCA 3.5mm AUX 3.5mm AUX 3.5mm AUX 3.5mm AUX
Volume Control
AB Switch
Mute Switch
Power Fully passive; No power required Fully passive; No power required Fully passive; No power required Fully passive; No power required Fully passive; No power required Fully passive; No power required
Little Bear MC103 PRO Douk Audio VU3 Little Bear MC5 Douk Audio P1 Douk Audio U3 Nobsound NS-01G PRO
Feature 3-IN-1-OUT XLR audio switch Analog VU meter; 2-Way audio switch 4-CH fully passive audio mixer Bluetooth preamp; Headphone amp; Vacuum tube; Tone control; APTX-HD Headphone amplifier; Classic; Mini size Bluetooth stereo amplifier; USB sound card; 100W

Features & details

Features

  • 2(1)-IN-1(2)-OUT 3.5mm Audio selector designed for customers having several audio sources and outputs
  • How to use: ① connect two audio sources (like CD player / computer) to A/B ports and one audio output (like active speakers) to IN/OUT port; ② connect one audio source to IN/OUT port and two audio outputs to A/B port
  • Main functions: ① select audio input between A and B with A/B siwtcher and get one output; ② select audio output between A and B to receive one input
  • Volume control; One key to mute; Super small size; Passive device; No power needed; Won''t affect sound quality
  • New version adopts customized potentiometers and isolation modules, which can fix the possible volume adjustment and background noises. We also add a new 3.5mm port between A&B ports according to some customers'' needs.

Product information Black

Product Warranty: For warranty information about this product, please click here
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Customer Questions

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Q: Idea: IN 1-> bluetooth adapter to connect laptop. IN 2-> turntable. OUT-> 2.1 stereo. I wa…

A: It will work but not ideally. You will need to power the bluetooth, this won''t do that. Al…

Shane Ware | 3 years ago

Q: Can this run 2 audio in & 1 audio out, both inputs need to be active?

A: Hello. Yes. If both inputs are avtive, you can use 2 audio in and 1 audio out and then swi…

Seller DoukAudio | 3 years ago

Q: I get a audible hum noise when I send my Mac output to my two channel system is there a si…

A: Yes, I get the same hum. If you turn the volume on the switch down to about 75% it goes aw…

Mike R. | 3 years ago

Q: Will this be able to serve as a mute and volume control with an android phone and a headse…

A: I haven''t tried that actually, but I have no reason not to see why that wouldn''t work. Yo…

Objective as I can be... | 1 year ago

Customer reviews

4.1 out of 54.1 out of 5
447 global ratings

Top reviews from the United States

Viktor Yenibahar
4.0 out of 5 starsVerified Purchase
Useless product, unless you want to use it for ...
Reviewed in the United States on April 7, 2018
Color: Black
After I received this product, I thought I was unlucky with the product I received as the volume control that is supposed to provide a gradual adjustment of volume, didn''t work at all. At the lowest setting it''s very low but after a minute amount of increase in the dial... See more
After I received this product, I thought I was unlucky with the product I received as the volume control that is supposed to provide a gradual adjustment of volume, didn''t work at all. At the lowest setting it''s very low but after a minute amount of increase in the dial (like 1mm), it goes to full volume. So I returned it and ordered a second one, hoping the issue would not repeat. Unfortunately, I had exactly the same issue!!! I contacted DoukAudio about the problem and they very quickly responded with instructions to remove two resistors from the circuit board. Pretty easy if you have a soldering iron. And once the resistors are removed, the product started to work perfectly, as per the product description. I still couldn''t figure out why they had put the resistors there in the first place. Long story short, I ended up being very happy with the product and DoukAudio''s customer service, but I have to deduct one star because of the hassle. The product should work as described without requiring soldering work by the customer. If some people have a use of the product with the resistors in place, they should be selling two separate SKUs.
58 people found this helpful
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Don
1.0 out of 5 starsVerified Purchase
Worst piece of electronic design!
Reviewed in the United States on January 28, 2019
Color: Black
I have never paid so much for rudimentary piece of electronics which didn''t do half of what was advertised. The volume control - that half of the device''s intended functions I refer to (the other being enabling switching between 2 inputs/or outputs, which it did do) hardly... See more
I have never paid so much for rudimentary piece of electronics which didn''t do half of what was advertised. The volume control - that half of the device''s intended functions I refer to (the other being enabling switching between 2 inputs/or outputs, which it did do) hardly worked at all. Using the highly touted volume control, sound level went ABRUPTLY from zero to ear-splitting, or loud to almost inaudible. A switch seems to have been added to later models in order to remedy this problem. It didn''t. Beyond that, the seller suggested a fix: taking the device apart and removing a couple of resisters. REALLY! Is it actually up to the buyer to re-manufacture their purchase in order for it to function? The device is, therefore, pretty much unusable, Can''t recommend this item under any circumstances.
16 people found this helpful
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Avlon
3.0 out of 5 starsVerified Purchase
Works decently, but don''t count on having a usable volume knob
Reviewed in the United States on November 13, 2018
Color: Black
I needed a headphone switcher to change between my phone and computer audio at work, and this was the only one that had the options I was looking for. Overall, it works fine: I can use the buttons to change between A and B channels, and the mute button is a great... See more
I needed a headphone switcher to change between my phone and computer audio at work, and this was the only one that had the options I was looking for. Overall, it works fine: I can use the buttons to change between A and B channels, and the mute button is a great feature.

The only issue I have is that the volume knob is essentially useless. Full volume is fine and the audio is clear, but the slightest turn drastically reduces the volume. The volume also lowers unevenly -- when lowering the volume, the left channel volume is quieter than the right channel. Lowering the volume again makes the right channel more quiet than the left channel.

Once the volume in both channels is the same, there is absolutely no notable change in volume, from the 4-o''clock position until the 8 o''clock position on the knob. The volume gets very quiet quickly, stays the same level until the volume is almost at zero, and then drastically reduces from very quiet to silence.

It would almost be better if the volume knob wasn''t there at all. I read a few other reviews and tried using the switch on the front if the switcher, but that did not help and I''m do not want to solder anything just to get this to work properly. Not sure if this would fix the issue, but maybe Nobsound should change the volume pot from an exponential taper rather to a linear one?

Overall, this is a good item, but I plan to use it only at maximum volume and change the volume on the devices it is connected to.
11 people found this helpful
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Amazon Customer
3.0 out of 5 starsVerified Purchase
Resistor issue with the volume control is a big flaw, though fixable.
Reviewed in the United States on June 10, 2018
Color: Black
Giving it a 3 because of two things. 1. The resistor issue mentioned by everyone else. That alone seems like a huge design flaw. Why should I have to cut up the circuit board on a new project just so it works as expected? 2. There is no easy way to mount it... See more
Giving it a 3 because of two things.

1. The resistor issue mentioned by everyone else. That alone seems like a huge design flaw. Why should I have to cut up the circuit board on a new project just so it works as expected?
2. There is no easy way to mount it to something. It comes with little stick-on rubber bumpers so it can sit on a desk or something, but some adhesive to mount it or a bracket would be nice.
13 people found this helpful
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Steve
3.0 out of 5 starsVerified Purchase
Jury Is Still Out On This One
Reviewed in the United States on February 11, 2021
Color: Red
The control looks good and does just what I wanted it to. However, I am fairly certain there is a drop in volume level (turned up to max) and sound quality when using this. I have yet to do an A/B comparison between this control and the other cheap switcher I was using.... See more
The control looks good and does just what I wanted it to. However, I am fairly certain there is a drop in volume level (turned up to max) and sound quality when using this. I have yet to do an A/B comparison between this control and the other cheap switcher I was using. I''ll either adjust my rating up or down when I confirm one way or the other. I don''t expect audiophile quality from a cheap little control at all, but I expected it to match the other switch''s capability.

My application is a home built arcade / MAME cabinet that can also stream music. I''m using the PC audio out and a bluetooth receiver as my two audio sources. The audio sources run into this control and out to an Alesis 100 watt power amp. (just 100 watts of clean power, it''s a sound reinforcement amp not typical home stereo) The Alesis is powering a pair of 2 way speakers at the top of the cab and a small sub in the bottom. I keep the volume of the amp set at about 40%. (plenty of power but no hiss) I wanted a passive volume control between the sources and the amp because the amp is in the back of the cabinet and isn''t easily accessible. Some game ROMs are louder than others and you always want volume control over music.

I''ll try to follow up fairly soon...
2 people found this helpful
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Quality Quester
5.0 out of 5 starsVerified Purchase
Working Well, and Hints
Reviewed in the United States on February 4, 2019
Color: Black
I''m using an MC102 with a single set of stereo speakers to allow selection of two computers as sound sources. It''s working fine for me. I set the MC102''s volume knob at maximum, then set my computers'' volume controls as desired. I can then use the... See more
I''m using an MC102 with a single set of stereo speakers to allow selection of two computers as sound sources. It''s working fine for me. I set the MC102''s volume knob at maximum, then set my computers'' volume controls as desired. I can then use the MC102''s knob for a quick volume reduction when needed (about 1/4 turn from "normal listening" to "barely audible"), or use the mute button if needed. In either case, I don''t have to bother with which computer I''m listening to or how (in?)convenient its volume and mute controls may be.

Mounting Hint: The lower screw heads are somewhat shorter than the thickness of a pair of 3M Command picture hanging strips. So, two pair of the small size strips (NOTE: check seller & listing to avoid international shipping AFTER you select your quantity, AKA "Size Name", on the Amazon page) allow convenient mounting to almost any flat surface. I''ve got mine mounted vertically, on the side of a computer stand. It''s light enough so you might even be able to mount it upside down underneath a shelf, though that''s a NONrecommended use of Command products (they hold well in shear, but tend to slowly give way to tension, so beware).

Usage Hint: The open-frame construction of the MC102 has a secret advantage. I can see the button positions (looking in through the side) from angles that block view of the face of the switch. So, I selected my cabling connections to the MC102 mnemonically: when the A/B switch button is more to my left, the computer more to my left is connected to my speakers. Likewise, button more rightward connects the computer more to my right. I can also see whether mute is engaged (button bottom more inboard of circuit board) or released (button bottom nearly even with circuit board).

Another Usage Hint: The dual IN/OUT jacks on the MC102 are not in parallel. Using the one across from the A and B jacks cuts off the one between the A and B jacks, so the "far" jack is the one to use for headphones if you want to cut off speakers whenever you use headphones.
3 people found this helpful
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GraphicsGuy
1.0 out of 5 starsVerified Purchase
White noise and buzz
Reviewed in the United States on July 27, 2020
Color: Black
Review for This 2 port version, references 4 port as well. I had purchased two Bear MC102 and one MC104 (4 port out). Unfortunately out of these 3 switches, only one had good audio isolation with no buzz, bleed or static. The other ones have very noticeable buzz,... See more
Review for This 2 port version, references 4 port as well.
I had purchased two Bear MC102 and one MC104 (4 port out). Unfortunately out of these 3 switches, only one had good audio isolation with no buzz, bleed or static. The other ones have very noticeable buzz, bleed and static. It might be bad translation, but the information slip in the box leads me to believe they know about the audio bleed and electric noise issues. That said, I can''t recommend any product that has a 1 in 3 chance of working correctly.
3 people found this helpful
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Scott Kennedy
1.0 out of 5 starsVerified Purchase
Creates major buzzing sound in the A speakers when switch to B output, headphones
Reviewed in the United States on March 12, 2019
Color: Black
I was super excited when I hooked it up and heard no audio in my A speakers, M-Audio monitors. Then I switched to B speakers (headphones), it created a major buzzing sound in the A speakers... that you could hear with the headphones on. Which makes it complexity useless.... See more
I was super excited when I hooked it up and heard no audio in my A speakers, M-Audio monitors. Then I switched to B speakers (headphones), it created a major buzzing sound in the A speakers... that you could hear with the headphones on. Which makes it complexity useless. Running through an iMac Pro fully upgraded. I will be returning.
6 people found this helpful
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Top reviews from other countries

M. J. Morris
1.0 out of 5 starsVerified Purchase
Shamefully awful
Reviewed in the United Kingdom on September 15, 2018
I was quite excited to receive this tiny device, thought it would allow me to switch between my headphones and speakers seamlessly, while providing 100% audio power to either source i select, as we all know a splitter cable does the job but only pushes 50% power to each...See more
I was quite excited to receive this tiny device, thought it would allow me to switch between my headphones and speakers seamlessly, while providing 100% audio power to either source i select, as we all know a splitter cable does the job but only pushes 50% power to each source. Sadly this nobsound device just ruins the quality of any audio passing through it, with weird screaches and hisses randomly destroying my music. The control knob is a very smooth to use and operate, but its power delivery again is shameful. On minimum it pushes 5% through and on maximum it pushes 100% through. But in between min and max its random as hell. From about 1 quarter to 3 quarters its almost the same volume level. Anything above 3 quarters it is 100% volume. With a slight dip in volume at the middle of the control knob. Unfortunately I probably received a faulty product. But my experience with this product just leaves me thinking poor cheap chinese crap. Shame.
13 people found this helpful
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JKL
1.0 out of 5 starsVerified Purchase
Screeching noise
Reviewed in Canada on November 27, 2020
First off, the device works. It switches between 2 inputs as intended. The issue is that there''s a loud screeching noise when 2 inputs are connected. It drives me insane and I can no longer use it. I tried using different cables, swapping the inputs, but nothing seems to...See more
First off, the device works. It switches between 2 inputs as intended. The issue is that there''s a loud screeching noise when 2 inputs are connected. It drives me insane and I can no longer use it. I tried using different cables, swapping the inputs, but nothing seems to fix it. If there was no screeching noise this would be a 5 star since it would work perfectly fine.
2 people found this helpful
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A.C.
5.0 out of 5 starsVerified Purchase
is great
Reviewed in Canada on November 19, 2018
works great. no idea how this does not have more reviews simple. effective. and inexpensive also do not have issues with the connections that another review claimed as there is definitely a satisfying "click" they must have received a defective product or was not even using...See more
works great. no idea how this does not have more reviews simple. effective. and inexpensive also do not have issues with the connections that another review claimed as there is definitely a satisfying "click" they must have received a defective product or was not even using 3.5mm
3 people found this helpful
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Brian B
3.0 out of 5 starsVerified Purchase
High Pitched Noise
Reviewed in Canada on December 8, 2020
This product was exactly what I was looking for when I started working at home and needed to switch my desktop speakers between a work laptop and my home PC. The device itself looks very nice, and I love the aesthetics of it. However, after a month or so the device started...See more
This product was exactly what I was looking for when I started working at home and needed to switch my desktop speakers between a work laptop and my home PC. The device itself looks very nice, and I love the aesthetics of it. However, after a month or so the device started emitting a high pitched noise while in use. Adjusting the volume can help to reduce the effect, but too low and it doesn''t become useful for listening to regular audio. For the most part if I have music playing I won''t hear this, but it''s annoying enough that I have to look at alternative solutions.
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Joseph L.
4.0 out of 5 starsVerified Purchase
Very useful, input switch has minor issue
Reviewed in Canada on October 16, 2020
I work at a live stream service where I have to monitor the soundboard output and the online sound. This product served me very well. One star is off because the knob to switch between sound input A/B isn''t very well made. It sometimes introduces static when switching and I...See more
I work at a live stream service where I have to monitor the soundboard output and the online sound. This product served me very well. One star is off because the knob to switch between sound input A/B isn''t very well made. It sometimes introduces static when switching and I would have to wiggle the knob around to some specific position to get a clear sound. Overall still extremely useful for me.
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