A/B switch works flawlessly. No problems there.The problem/weird issue lies with the volume knob. You'll read other reviews that say the same, but I'm experiencing something different. I have a Dragonfly USB DAC + AMP connected to my PC, then the aux comes out to the input of the MC102. Then it splits into two sources. Unlike others, it seems as though my volume knob works --- I do not have extreme changes in volume with small movement, but actually the opposite. PC is on 100% volume, but when I turn it to the MIN, there's still sound coming out. Then I turn all the way up to the MAX and its honestly not that much louder. So this kind of changes/attenuates sounds in the middle, and only so slightly that I can barely hear a difference between a quarter turn and a half turn. Past 3/4 of the dial it starts to increase volume unevenly between the left and right channel is which is very strange, and unacceptable honestly.So there's my review.I did not have to remove any resistors like others have had to, but this unit could work a whole lot better. I have the version with 4 outputs and that one works perfectly, so I'm not sure what they did wrong with this one.
SGEYR 5X1 HDMI Switcher: Choose From 5 Devices With Ease & 4K Ultra HD Support
35 Review
Smart Column Yandex New Station Mini - smart column with Alice (no watch), black onyx
209 Review
Nobsound Little Bear MC104 4(1)-In-1(4)-Out 4 Port 3.5Mm Stereo Audio Switcher For Passive Speakers And Headphones - Manual Selector Splitter Box In Black
42 Review
Smart column Apple HomePod mini, gray space
50 Review
Radio receiver Max MR-322 anthracite
14 Review
Stream Your Favorite Tunes With AUNA KR-200 SI Internet Kitchen Radio - Spotify Support, Remote Control, And More!
15 Review
Sony ICFC1TBLACK Alarm Clock Radio
11 Review
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review