Digital Volume control board using CS3310 from Crystal Semiconductor, volume changeable from -80dB to 0dB 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
Kits include: two main pcb
board size: L 250mm X W 60mm
display board: L 230mm X W 52mm
one display with control logic board
one plastic remote handset