Technics SU-8600

1 9 7 5 june 1975
1 9 7 6 1976

Mid-end amplifier available in two versions spread over three years and two markets.
Same guts and circuits, though : just a difference in looks and, therefore, in timeframe.

The original SU-8600 is silver, encased in nice wood panels for a woody-shiny invitation to warm musical pleasures - 1975.
The later, export-only, SU-8600 is a no-wood-all-metal-with-rack-handles which screams "I am indestructible" - 1977.

Unlike the ST-8600 tuner companion which saw partial revisions and additions, the two SU-8600 are circuit-wise identical :

An old-style trafo, two 15,000µF caps, and six separate windings for the left and right parts of the preamp, voltage amp and power amp make the power supply ; the first two stages are regulated.

A differential amp in the firsrt stage, modded SRPP in the second stage and low-noise 'sistors makes the phono (MM) stage.

Current mirror loading is in the first, differential amplification stage of the 3-stage tone control circuit.

Also in : 26-steps & two-gang ALPS volume attenuator, deported source selector and multivoltage selector (inside, for the EU versions).

The later SU-8600 (the blackserious one) was made to accompany the SU-9200 preamp and SE-9200 power amp, export-wise.
But the ST-9600 could fit as well since it was, as ST-8600, the original companion of the SU-8600 when the latter still was 1975 silver.

This waltz of 97xx, 96xx, 86xxand 92xx mixed lineups however doesn't change the fact that all this was simply made to listen to music.
Without I am indestructible pretenses.

Technics SU-8600, image 1 Technics SU-8600, image 2 Technics SU-8600, image 3
Technics SU-8600 specifications
Title Value
POWER section POWER section
Power output : 2x 73W (20Hz...20Khz, 8 Ohm, 0,08% THD, both channels driven)
2x 80W (20Hz...20Khz, 4 Ohm, 0,08% THD, both channels driven)
2x 76W (1Khz, 8 Ohm, 0,08% THD, both channels driven)
2x 85W (1Khz, 4 Ohm, 0,08% THD, both channels driven)
THD : 0,08% (rated power, 20Hz...20Khz)
IMD : 0,08%
Frequency response : 20Hz...20Khz (+0 / -0,2dB)
S/N ratio : 115dB (IHF-A)
Residual noise : 0,3mV
Damping factor : 50 (8 Ohm)
Input : 1V / 47kOhm
PREAMP section PREAMP section
Inputs : 2,0mV / 47kOhm (phono 1 & 2)
150mV / 47kOhm (tuner)
150mV / 47kOhm (aux)
150mV / 47kOhm (tape play 1 & 2)
Maximum phono level : 200mV (1Khz, RMS)
THD : 0,08%
S/N ratio : 73dB (phono 1 & 2, IHF-A)
92dB (tuner & aux, IHF-A)
Frequency response : ± 0,4dB (RIAA)
± 0,3dB (lines, 20Hz...20Khz)
Bass control : ± 12dB at 50Hz
Bass turnover : 250Hz or 500Hz
Treble control : ± 12dB at 20Khz
Treble turnover : 2,5Khz or 5Khz
High filter : 8Khz 12dB/octave
Low filter : 30Hz 12dB/octave
Loudness control : +8dB at 100Hz
Muting : -20dB
Outputs : 1V / 8V max. (pre out)
150mV (tape rec)
General General
PC : 250W
Dimensions : Dimensions :
Weight : Weight :
Technics SU-8600 : 0 topic
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page online since : june 2007
page updated : october 2010
page type : LGT / KNB
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