订阅每周 HiFi 精选 — 新设备、好文推荐与优惠信息。
The Pioneer A-604 R is a stereo amplifier released in the 1980s. It has a power output of 70 watts per channel and includes features such as tone controls, multiple inputs, and a headphone jack. The A-604 R is part of Pioneer's A series of amplifiers.