This pre-amplifier has been designed for low noise, with RIAA compensation. This pre-amplifier requires a 9 VOLT battery ( not supplied ) for Power. To turn the pre-amplifier on, slide the power switch to the "ON" position.
YAMAHA ステレオパワーアンプ B-4 /【Buyee】 "Buyee" Japan Shopping Service | Buy from Yahoo! Buy from Japan!