Coming soon: Main processor board detailed description including phase scarmbler, band-limiting input filtering, low frequency parametric equalizer, high frequency pre-emphais equalizer, dual-band program leveling AGC with noise gate and 1st / 3rd order selectable crossover network, 4-band crossover networks, each comprising dual third order highpass, bandpass, or lowpass sections, program compressor / limiters, distortion cancellation, and metering.