How about marantz 8 amplifier?

marantz PM8 HIFI power amplifier 11V power Class A and B fever pure power amplifier market is rare in high-end models, quite rare in marantz PM8, PM8 and PM8MZ upgraded versions, two pieces of marantz HDAM, all made of heavy materials and selected parts, and the circuit was redesigned, so that every note can be faithfully restored. However, in 1999, the price positioning of more than 13, yuan allowed this machine to flow into the market, and the voltage was 22V, not. Analysis: HDAM (Analog Output Amplifier Circuit) High-speed "voltage amplification" analog output amplifier circuit is referred to as HDAM for short, which is one of MARANTZ's secrets, making the sound of the machine greatly different from other one-bit machines in dynamics, speed, analytical power and liveliness. As an excellent technical achievement, this HDAM has been widely carried forward by MARANTZ and transplanted to most computers.