hifi engine

Manual Library / Technics

Technics SU-A6

Stereo DC Control Amplifier (1982-88)

add a review add a review

Technics SU-A6


The Technics SU-A6 is a high performance preamp which can be used with any high fidelity power amplifier.

It employs class A circuitry from input to output, and FET differential inputs in all stages for complete input capacitor-less (ICL) circuitry.

Basic circuitry consists of the high gain ICL phono equalizer amp, ICL DC flat amp, and DC output amp.

Only one coupling capacitor is used (at the phono equalizer output), making this amp capable of straight DC amplification from high level inputs (tuner, aux, and tape) to output.


  • Frequency response: 1Hz to 20kHz

    Total harmonic distortion: 0.002%

    Input sensitivity: 0.25mV (MC), 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 74dB (MC), 88dB (MM), 106dB (line)

    Channel separation: 56dB (line)

    Output: 150mV (line), 2V (Pre out)

    Dimensions: 430 x 97 x 360mm

    Weight: 5.5kg

  • Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.002%

    Input sensitivity: 0.1mV (MC), 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 73dB (MC), 80dB (MM), 100dB (line)

    Output: 150mV (line), 2V (Pre out), 8V (Pre out Max)

    Dimensions: 430 x 98 x 360mm

    Weight: 5.9kg


Related Catalogues

A Class Of Its Own

Component Line Up


HiFi Components


If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


This website is not affiliated with or sponsored by Technics. To purchase SU-A6/SU-A6 mk2 spares or accessories, please contact the company via their website or visit an authorised retailer.