feature: The fourth ADI SHARC DSP chip, main frequency 400MHZ, floating point 32-bit, sampling rate 96KHz frequency, 24-bit A/D or D/A converter, high S/N. Built-in USB, RS232, RS485 interface, PC software control. RS485 can connect up to 250 machines, remote control over 1500 miles. RS232 supports external central control of multiple scenarios. 12 groups of user data are available. Panel lock function. Each input channel has 31-band GEQ and 10-band PEQ, gain and delay. The output channel has 10 frequency bands PEQ, HPF, LPF, gain, delay, limiter and mute. HPF / LPF: Linkwitz-Riley / Bessel / Butterworth (12dB / oct, 18dB / oct, 24dB / oct., 48dB / oct). Multiple channels can be set at the same time, the maximum delay: 1000ms (MS / M / FT). Technical Parameters: Input/output channel: 4X8 Input channel: mute, each channel can be set independently. Delay: Adjustable range: 0-1000ms Polarity: in phase (+) and reverse phase (-) Equalizer: 10-band PEQ, 31-band GEQ, FREQ: 20Hz-20KHz Output channel: mute, each channel can be set independently. Mixer: independent or mixed control. Gain: adjustment range: ±12dB, step size: 0.1dB Delay: Adjustable range: 0-1000ms. Polarity: in phase (+) and reverse phase (-) EQ: 10-band PEQ, FREQ: 20Hz-20KHz X-over: LPF, HPF, FREQ: 20Hz-20KHz Compressor: threshold: ±20dBμ, step size: 0.05dB Input impedance: balanced 20KΩ Output impedance: balanced 100Ω Input range: ≤+15dBμ Frequency response: 20Hz-20KHz (0? 9? 1-0.5dB) Signal-to-noise ratio: >105dB Total harmonic distortion: <0.01% (output=0dBμ/1KHz) Channel crosstalk: >80dB (1KHz)