1.3-6 In-Out Configuration 2.Starting Lineup in Classic Series 3.Simple and Easy to use 24-bit,48kHz sampling rate, AD / DA convertor,32 bits DSP chip. Input processing includes Gain, Mute, Noise gate, high-cut, low-cut, 8 parameter EQ, Phase, Delay and so on (PRO-480 without Hi-cut Low-cut And PEQ) Output processing includes crossover , 5 parameter EQ,Gain, Mute, compressor/Limiter, Phase, Delay ...