I probably bought this mixer for a somewhat different purpose compared to most people. I have active speakers connected directly to my computer sound card, and my idea was to route the sound card speaker output through this little mixer so I could have a volume and sound control on my desk.
Physically the mini-mixer exceeded my expectations. It is compact and small, but sturdy and the knobs are quite nicely dampened. Its weight is also a lot above that of consumer USB sound cards.
The obtained sound quality is decent without noticeable noise and you can go to quite high volumes.
I am also very pleased to now have an accessible headphone socket (3.5mm) on my desk rather than behind it, with an independent volume control.
I haven’t tried the XLR mic input yet, but for what I want I am actually very happy.
I took a couple of images of the hardware and put them on PicasaWeb: https://picasaweb.google.com/111743287730172647732/BehringerXenyx302USB.
The ICs used are:
- IC 1 AD 8602D Dual Rail-to-rail Input And Output Amplifier With Very Low Offset
- IC 2 TI PCM2902E Stereo Audio CODEC w/USB Interface, Single-Ended Analog Input/Output & S/PDIF
- IC 3,8,9,11,12,13,14 ST 062C eZ038 Low-power JFET dual operational amplifiers
- IC 4 1B3BH?
- IC 5 EH11A 019F42 Low dropout linear regulator
- IC 6 ST 064C EZ9A101 Low power JFET quad operational amplifier
- IC 7 4580R Low Noise Operational Amplifier
- IC 10 ST LM339 Low-power quad voltage comparator
- Product website: http://www.behringer.com/EN/Products/302USB.aspx
- Compare prices for Germany: http://geizhals.at/de/695227