4 way crossover Each parametric section provides 40dB~+6dB gain adjustment, step in 0.5 dB Each parametric section provides Limit control Each parametric section has 5 bands PEQ with frequency, gain and bandwidth adjustable Each channel max 7 ms delay with parameters adjustable Low pass crossover range: 35Hz~22kHz, 377 positions High pass crossover range: <10Hz~16kHz, 380 positions Lock function Frequency respond: 20Hz~20kHz RS232 control (with PC software) 10 user memories 6 * 7 LED inputs/outputs accurate level meters 2 * 20 LCD display with backlit