Harman Kardon Citation 12
Stereophonic Power Amplifier (1976)
Two individual power supplies deliver superb regulation for absolute stability and extended low frequency response. Handling of transients is effortless at any power level.
Hermetically sealed heavy duty silicon output devices deliver exceptionally wide frequency response at full power output with low distortion.
Fail-safe operation with all types of speakers including electrostatics. Amplifier can handle high power transients, short circuits or unloaded condition without damage to the output stage.
Computer grade components guarantee long, trouble free life.
Heavy duty heat sinks keep amplifier cool even under stress operating conditions.
Power output: 60 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 70kHz
Total harmonic distortion: 0.2%
Damping factor: 40
Input sensitivity: 1.5V
Signal to noise ratio: 100dB
Dimensions: 140 x 311 x 317mm
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Reviewed May 15th, 2016 by sousfa
I bought it cheap in second hand in ebay. The first listen was poor. I replace all caps electrolitics by new and bigger capacity. The amp has changed completely. The bass is incredible firm dynamic and clear. It is very difficult to find a better amp on the bass for a reasonable amount of Money. The midrange and treble was not so good but decent. Then I start to male some modifications. The input stage transistors were replace by a par of Fet’s 2sj74 very well paired . You have to adapt a bit the transistors to the circuit. Don’t touch anything else because the way it was done it is perfect.
After this modifications it become a very refined transistor amp. I have replaced my Hiraga 8w by it with big improve in the bass ,dinamics and a small l loss in the mid /treble refinement. It is perfect for vintage rock.