From the manual

ELECTRICAL SPECIFICATIONS

Impedance balanced audio outputs:
Headphones out level: +15 dBu
Main/cue outputs level: +10 dBu
Output impedance: 560␣ ␣ ␣unbalanced S/N ratio: 102 dBFS (20-20.000 Hz)
Unbalanced audio inputs: Input level: +8 dBu maximum Audio input impedance: 9 k␣ SNR inputs: 99 dBFS (20-20.000 Hz)

HARDWARE

impedance balanced audio out jacks
4 x 1/4” audio in jacks
1 x 1/4” stereo headphone jack