Genuine Yamaha room audio microphone optimiser. Genuine Yamaha Audio Microphone Optimiser DSP/ HTR/ RX/ YHT/ YMC/ YSP (WN649600). NEW Genuine Yamaha Audio Microphone Optimiser for YSP-2200. Genuine Yamaha Audio Microphone Optimiser for RXV-657 / YSP-500 / YSP-600.
eBay