Great mixer, great preamps, reasonable onboard effects for something in the pricepoint...BUT...channel 3 hisses loudly, making it unusable. Can you fix it? Do you need all of the channels...?? Could be a great deal for someone. This is an older version of the model you would get if you ordered from Sweetwater (currently on V3, I believe). Here are the specs:
channels 1-4:
mono mic/line inputs (XLR and 1/4" TRS)
switchable high-pass filter (100 Hz, 18 dB/octave)
insertion (I/O) jack
channels 5/6 and 7/8
mono mic and stereo line inputs (XLR and 1/4" TRS)
switchable high-pass filter (100 Hz, 18 dB/octave)
channels 9/10 and 11/12:
stereo line inputs (1/4" TRS)
switchable phantom power (+48 volts) on all mic inputs
3-band EQ on all channels
high: 12,000 Hz (shelving)
mid: 2,500 Hz (peaking)
low: 80 Hz (shelving)
OL (overload) lights on all channels
Special features
PC connectivity via USB
Tracktion 3™ music production software included
compatible with Mac OS X 10.4.11 and later, and Windows XP, Vista, 7, and later
Running Man FX processor (RMFX™) with 16 effects
2 auxiliary buses
Monitor: pre-fader
FX : post-fader bus to effects processor and effects send
7-band stereo graphic EQ on main mix or Mon output
Break button mutes all channels but tape and USB inputs
line/hi-z switch on channel 1 allows guitar input without a DI box
General features
LED output meter with peak indicator
PFL (pre-fader listen) for metering and monitoring individual channels
mute and pan controls on each channel
headphone output
steel chassis
dimensions: 14-5/8"W x 3-5/8"H x 14-1/16"D
weight: 9 lb