Digital Volume control board using CS3310 from Crystal Semiconductor, volume changeable from 0dB to -80dB with muting control, with display board to show the channel number and volume level, each board have 4 input select (using relay to changeover) by remote or manul, three voltage regulators on board to achieve the best sonic performance.
Can connect up to three sets to perform multi channel control
Kit's include: onemain pcb
one display with control logic board
one plastic remote handset
board size: L 250mm X W 60mm
display board: L 230mm X W 52mm