Marantz PM- 66SE is a stereo integrated amplifier and it is a followed SE ( Special edition) series of PM- 44SE and PM- 55SE, manufactured in 1997. The output power is 75w at 4 ohms and 55w at 8 ohms. Correspondingly, the output power measured in the continuous mode is same as the RMS power (50w and 70w on loading 8 and 4 ohms respectively). The frequency response is 5hz to 70khz. Like the other SE models, this amplifier delivered very powerful and balanced sounding.