Audio Database

The

Technics SU-A6
100,000yen(around the 1980 time)

Description
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Control amplifier which aimed at the saturation in the high level of a performance and a functionality based on the technology carried by SU-A2 and SU-A4.

Switching distortion and crossover distortion are eliminated by whole page Class-A operation.
Furthermore, all basic circuits were interrupt-control-logic-ized, it is only that a Phono input passes only one coupling capacitor, and the high-level input has realized the straight DC amplifier which does not pass any capacitor.

Equalizer amplifier has adopted the low noise Dual-FET parallel stream composition, and a direct interconnection of MC cartridge is possible for it.
Moreover, to man-month cartridge, it corresponds by the gain switching.

The low-power-output impedance design with SEPP buffer amplifier is carried out.
Thereby, even if it connects the power amplifier of a low input impedance, and it connects many sets of power amplifier, the wave failure which considers it as a cause does not occur.

The original shelving tone is carried.
In this shelving tone, the effective correction adapted to a real using is enabled, without being able to adjust in four steps, the super base, a super treble, a bass, and a treble, and falling into a superfluous correction.

The audio muting switch, the Subsonic Filter, and the high light filter are carried.

The selector which became independent by input and rec out is adopted, and the play source and the different source can also be recorded simultaneously.

The gilding treatment is performed to the total input/output terminal.


Rating of a mode
Form Stereo control amplifier
Input sensitivity/impedance
Phono1 MC: 100 microvolts/100 ohms
250 microvolts/220 ohms
Phono1 MM: 1.0mV / 47kohm
2.5mV / 47kohm
Tuner, AUX, Tape : 150mV / 47kohm
THD
VR maximum, the 3V output Phono MC (250 microvolts): 0.003%
Phono MM(2.5mV):0.002%
Tuner, AUX, Tape: 0.002%
VR-30dB, 0.5V output Phono MC (250 microvolts): 0.006%
Phono MM(2.5mV):0.002%
Tuner, AUX, Tape: 0.002%
SN ratio Phono MC (250 microvolts): 74dB
Phono MM(2.5mV):88dB
Tuner, AUX, Tape (straight DC): 106dB
Frequency characteristic
Phono MM: 20Hz-20kHz RIAA}0.2dB
20Hz-100kHz RIAA}0.5dB
Tuner, AUX, Tape : DC-20kHz+0 -0.1dB
DC-200kHz+0 -3dB
Maximum permissible input (1kHz, RMS) MC (250 microvolts): 16mV
MM(2.5mV):160mV
Shelving tone transition property super bass (20Hz, +12 dB/oct): 0dB - +10dB
bass(50Hz): }5dB
treble(20kHz): }5dB
super treble(50kHz): }10dB
Shelving tone turnover frequency super bass (+12 dB/oct): 75Hz, 150Hz
bass:500Hz
treble:2kHz
super treble:8kHz
Filter subsonic: 20Hz-12dB / oct
high: 7kHz-6dB / oct
Loudness control (Volume-30dB) 50Hz:+7dB
An Output voltage/impedance
pre out: 2V/2 ohm (rate)
8V/2 ohm (maxima)
rec out: 150mV/600 ohms
Supply voltage AC100V, 50Hz/60Hz
AC outlet Power-switch interlock maximum permissible power: 600W
Power consumption 6W
Dimensions Width 430x height 97x depth of 360mm
Weight 5.5kg