2 V/20 kO (line)
±15 dB/80 Hz (zones 1-4)
±15 dB/12 kHz (zones 1-4)
4 x 6.3 mm jack (line 1-4),
4 x 6.3 mm jack (line 5-8),
4 x RCA L/R (line 5-8)
1 x RJ45 (push-to-talk microphone),
2 x RJ45 (remote in),
screw terminal (speakers)