Radial Engineering Workhorse 500 Series Rack and Mixer

Circuit type: Virtual earth mix buss Integrated operational amplifier - Class AB Max output level: +22dB (20Hz to 20kHz)
Voltage Gain: Up to +23dB on the main output
Distortion: 0.007% @ 1kHz with 10dB in and 10dB out 0.05% @ 20Hz with 10dB in and 10dB out
Crosstalk: -65dB
Signal to Noise: -91dB with +20dB output
Card Slot Inputs: Eight balanced XLR, ¼" TRS, D-SUB
Card Slot Outputs: Eight balanced XLR, ¼" TRS, D-SUB
Card Slot Impedance: Depends on modules used
Internal Mix Buss: 4.75k Ohms input coupling resister
Summing Mixer Input: DB-25, Unbalanced +4dB/-10dB with up to +20dB capacity; input impedance = 4.75K Ohms
Main Output: Balanced stereo output; XLR, ¼" TRS; Jensen transformer isolated; +4dB (to +22dB)
Main Inserts: ¼" TRS - tip = send; ring = return
Monitor Output: Balanced stereo output; XLR, ¼" TRS; transformerless; +4dB balanced (to +22dB)
Connector Wiring: XLR: pin-1 ground, pin-2 (+), Pin-3 (-); TRS ¼": tip (+), ring (-), sleeve ground
Headphone Out: ¼" TRS Stereo - 2.8VRMS @ 8 Ohms (up to 7VRMS depending on headphone impedance)
Ground: Red: audio, Black: chassis
Power Supply Input: 100V - 240V AC with 48V Phantom
Power Supply Output: 1600mA - External switching type with 5-pin XLR, 48V phantom;
Dimensions: 19" wide x 5.25" tall x 7.44" deep 482.6 wide x 134 tall x 189mm deep
Weight: 22lbs / 10kg