PIONEER C-90 / M-90 (JAPAN 1986)
The PIONEER M-90 power amplifier was introduced in 1986. It features two outsize transformers (one for each channel), large electrolytic capacitors (for a total capacitance of 48000 microfarad), four bridged rectifier circuits using fast-recovering diodes and 16 power transistors (8 per channel) in a "four-in-parallel" configuration. The amplifier can deliver a dynamic power of 800 watts at 2 ohms (with EIA dynamic test signal) The aluminium front panel with a deep lacquer-like finish incorporates the switchable fluorescent power output indicators. Continuous Power Output: 200 W/ch (20-20000 Hz T.H.D. 0.003%, 8 ohms)
Dimensions: 457x154x430 mm Weight 20.4 kg
Dimensions: 457x154x430 mm Weight 20.4 kg
SANSUI C-2301 / B-2301 (JAPAN 1983)
The Sansui C-2301 pre-amplifier and Sansui B-2301 power amplifier were introduced in 1983 and manufactured until 1991. Sansui introduced the X-Balanced Amp technology, a new design which prevents ground-related problems such as IHM distortion. In it, all circuits are balanced - from input through power supply and negative feedback to output - thus providing extraordinarily pure and clean sound. Technical data: 300 W/ch min. RMS 8 ohms from 20 to 20,000 Hz with no more than 0.003% total harmonic distortion. Dimensions 474x215x500 mm Weight 37 kg
YAMAHA M-85 / C-85 (JAPAN 1986)
The M-85 is Yamaha's finest Natural Sound power amplifier, offering massive output power and extreme reproduction purity for the discriminating audiophile. It delivers an astounding 250 watts of power per channel into an 8 ohm load with a mere 0.003% THD. In short, the M-85 offers power to suit any listening requirement. Further, Auto Class A Power and Zero Distortion Rule circuitry make this one of the cleanest sounding amplifiers available. Regardless of the type of music you enjoy - rock, jazz, classical, or anything in between - the M-85 responds with dynamic power on demand, making the most of today's dynamic audio sources. It is capable of driving up to three speaker pairs independently, simultaneously, or in any combination of two. You'll appreciate its heavy-duty speaker connection terminals, wide-range LED peak power level meters, meter display load selector, meter Peak Hold and Range selectors, and full overload protection circuitry. The M-85 is an outstanding achievement in power amplifier design.