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RE: Any know about a Pioneer A-7 amp?

Description and features:

*The Model A-7 was manufactured around 1982, part of Pioneer's "Champagne" series.
* A Non-switching type DC Servo amp. ["Non-switching", is what Pioneer called their dynamic bias or sliding bias system, that was supposed to provide the sonic benefits of class A operation without the excessive heat and power consumption.; this bias system was also called "new class A" by one or more other mass-market manufacturers, like Nikko and Technics if I recall correctly].
* The Line Straight switch bypasses the tone and balance controls, and the mode switch.

Specs:

* Output: 70W x 2 @8 ohms, 20Hz-20KHz, .007% THD; 85W x 2 @ 8 ohms (DIN).
* Recommended speaker impedance range: 6 ohms-16 ohms.
* Maximum power consumption: 200 watts.
* Phono sensitivity/input impedance: 2.5mV/50K (MM); 0.25mV/100ohms (MC).
* High level inputs sensitivity/impedance: 150mV/50K.
* Tone control adjustment range (treble): +/- 10dB/100Hz.
* Tone control adjustment range (bass): +/- 10dB/10KHz.
* Subsonic filter: 20Hz (-6dB/octave).
* Hum & noise: 88db(MM); 70dB(MC); 95dB (high level inputs)





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