The PMM-4 is ideal as a primary or submixer for meeting rooms, Houses of Worship, broadcast and educational public address systems. 

Frequency Response 22~22,000 Hz
Distortion
Noise.
CMRR >70dB
Power Supply 12~18VDC, 600mA
Dimensions (mm) 205(D)*212(W)*43.5(H)
Net Weight 1.41kgs
Input Connector XLR / 1/4” balance phone jack combo
Input Impedance 5.9KΩ
AUX Input Connector 1/4” phone jack (left / right channel)
AUX Input Impedance 18.2 KΩ(MONO:9.1 KΩ)
Main Mix Output Connector 1/4” phone jack (left / right channel)
Main Mix Output Impedance balanced:1KΩ, unbalanced:500Ω
Output level (Max) 6.5±0.3dB (INPUT CH1~4)
Split Output Connector XLR
Split Output Noise