This Yamaha EMX312SC 12-channel mixer has been tested and works great. See the manufacturer's details below.
 
General Features:
12-channel powered mixer combines and balances your microphone, instrument, and line sources
rugged, lightweight, and easy to set up
two built-in amps can power main speakers in stereo or monitors and mains in mono
output power (0.5%THD @ 1kHz): 300W x 2 max. at 4 ohms, 190W x 2 max. at 8 ohms
Yamaha Speaker Processing (YSP) ensures smooth highs and enhances low frequencies
inputs 1-4 feature a single-knob compressor circuit for quick, easy enhancement of instruments or vocals
standby mode mutes mono inputs while leaving stereo inputs active, ideal for background music playback at set breaks
conveniently located handles for easy carrying
 
Connections and Effects:
inputs: 8 XLR, 4 TRS 1/4", 2 stereo 1/4", and 2 stereo RCA
inputs 1-4: mono, mic or line-level, phantom power
inputs 5/6 and 7/8: stereo pairs or mono channels
inputs 9/10 and 11/12: dedicated stereo pairs
line outputs: stereo main, monitor, effects, and record (stereo RCA)
speaker outputs: Speakon and 1/4"
built-in separate 7-band graphic equalizers for mains and monitors
3-band EQ controls for each channel strip
16 built-in effects include reverb, echo, chorus, flanger, phaser, and distortion
 
Specifications:
crosstalk: -65 dB @ 1 kHz
phantom power: 15V
17-3/8"W x 11-1/4"H x 10-3/4"D
weight: 22 pounds
 
Pickup is in Melbourne, Florida, USA or shipping is available.
 
Maximum Output Power @ 0.5 % THD at 1 kHz
300 W/4 Ω; 190 W/8 Ω
Frequency Response
-3, 0, 1 dB 20 Hz-20 kHz, ref to the nominal output level @ 1 kHz
Total Harmonic Distortion
Less than 0.5 % (THD+N) +14 dB @ 20 Hz, 1 kHz, 20 kHz, GAIN control: all nominal
Hum & Noise
Equivalent Input Noise, -115 dBu, Rs = 150 Ω CH 1-4 MIC/LINE: MIC
Crosstalk
-65 dB @ 1 kHz
Input Connectors
CH 1-4: XLR and Phone; CH 5/6, 7/8: XLR and Phone; CH 9/10, 11/12: XLR and Pin
CH EQ
HIGH, MID, LOW
Phantom Power
15 V
Graphic Equalizer
7 Band (125, 250, 500, 1 k, 2 k, 4 k, 8 kHz): Main (Stereo) and Monitor
Digital Effects
SPX Digital Multi Effector (24 bit AD/DA, 32 bit Internal Processing): 16 Programs
Power Amp Mode
Main L/R, Main (L+R)/Monitor
Foot Switch
On/Off
Dimensions (W x D x H)
442 x 274 x 286 mm (17-3/8" x 10-3/4" x 11-1/4")
Weight
10 kg (22 lbs.)
Power Requirements
120 V 60 Hz
Power Consumption
400 W