Niles si-1230 series ii 12-channel multi-room power amplifier (fg01704)
Niles Si-1230 Series II 12-Channel Multi-Room Power Amplifier (FG01704)
Niles Si-1230 User Manual
Niles si-1230 photo #2205398 Niles 1230 si series ii 1525 price multi room amplifier channel