;)
Introduced July 1989, MF200 March 1990
The MF80 was the first solid state power amplifier bearing the conrad johnson name. It was soon followed by the very similar, but more powerful, MF200 FET. These amplifiers were the result of more than a decade of research by conrad-johnson into the application of solid-state devices to the reproduction of music.
The MF80 & MF200 used a similar circuit and differed in their power output-the MF80 delivered 80 watts per channel RMS & the MF200 delivered 200 watts per channel RMS. FET's (Field Effect Transistors) were chosen as the basic circuit element of these designs because of their absence of the annoying odd-order harmonics that plagued so many transistor designs. Minimal negative feedback was used which obviated the typical overshoot and ringing associated with the "transistor sound" of other amplifiers. Parts specification met cj quality standards throughout. All capacitors were polypropylene and cjd polystyrene with the exception of the power supply filter caps. All resistors were 1% metal-oxide deposited on glass construction.
The MF80 & MF200 achieved astonishing results for solid state designs - often compared with the top tube amplifiers of the day.
Specifications:
Power Output MF80-80 & MF200 - 200 watts per channel from 20Hz to 20KHz with no more than 1% THD or IMD, both channels driven into 8 ohms.
Input Sensitivity: MF80 1.3V, MF200 2.2V.
Frequency Response: 20Hz to more than 20kHz , +0, -.5dB
S/N Ratio: MF80 96 dB, MF200 98dB relative to rated power
Dimensions: MF80 19" X 5 _" x 12.63"
MF200 19" X 8 _" X 15.63"
Weight: MF80 38 lbs.
MF200 59 lbs.