Modern Acoustics DSP-306 Digital Audio Processor, 3in / 6 out with 20Hz-20KHz frequency response. Features, parametric EQs 15 in each input and 10 in each output, High Pass (low cut) / low pass (high cut) crossover with Butterworth, Linkwitz-Riley and Bessel filters. Each channel has a 1000ms delay, Gain is -60+15dB and also includes limiter & compressor. The DSP-306 supports RS232 and USB port and features wired TCP/IP protocol and Audio Matrix Routing.