This item works and seems to be well made. One of the things I liked about it most was that it's bare bones and has a single purpose. I did remove the R5 and R6 resistors and the difference is noticeable but just slightly. the volume difference when turning the knob is not gradual so I turn it slowly and often back and forth just a bit to find the sweet spot I want. The mute button and the A B switch button work well. Sound quality is good in either direction (1 in - 2 out or 2 in - 1 out). Having said all of this the amplified audio going into this device is low power (Headphone amp) so I am assuming if you are inputting more than 30W the knob would probably not need to be adjusted so slightly. Given the application I am using I think it works great. I love the old school looks of it as well.
ο»Ώ
Portable acoustics HUAWEI Sound Joy, 30 W, volcanic black
78 Review
SGEYR 5X1 HDMI Switcher: Choose From 5 Devices With Ease & 4K Ultra HD Support
35 Review
4G LTE modem HUAWEI E3372h-320 White
49 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
Sangean PR-D4W Portable Weather Alert Radio with AM/FM Bandwidth Narrowing and Auto Tracking for Improved Searchability
12 Review
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review
Sony ICFC1TBLACK Alarm Clock Radio
11 Review
Radio receiver Max MR-322 anthracite
14 Review