hifi engine

Manual Library / Dynaco

Dynaco SCA-80Q

4-Dimensional Amplifier (1972)

add a review (1 review)

Dynaco SCA-80Q


The Dynaco SCA-80Q is an all silicon solid state stereo control amplifier of exceptionally high quality.

It functions as the control centre for all mono or stereo signal sources, such as a record player, radio tuner, tape recorder, television sound, etc., and provides output connections from two 30 watt power amplifiers for either two or four loudspeakers, as well as a front panel jack for stereo head phones.

Thoughtful planning has provided exceptional flexibility with remarkable ease of operation.

The SCA-80Q incorporates special circuitry which enables Dynaquad 4-dimensional playback for increased realism from a four speaker system without any additional electronics.

Alternatively it may be used as a conventional two channel stereo amplifier with provision for optional connection of a second pair of speakers in a remote location.


Power output: 30W/ch into 8Ω (stereo), 30W/ch into 8Ω (quadraphonic)

Frequency response: 15Hz to 50kHz

Total harmonic distortion: 0.5%

Damping factor: 40

Input sensitivity: 3mV (MM), 130mV (line)

Signal to noise ratio: 60dB (MM), 80dB (line)

Channel separation: 50dB (line)

Speaker load impedance: 8Ω to 16Ω

Semiconductors: 20 transistors, 10 diodes

Dimensions: 13.5 x 4.25 x 10 inches

Weight: 16lbs


Related Catalogues


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.


 Login or register to post reviews

Reviewed Jul 25th, 2018 by Qmvp20

I was so surprised how good sound comes out of an old Dynaco SCA-80Q!
Have few other amplifiers but this one is my daily comfort zone- most pleasant, tube like sound- can listen for hours especially with higher end turntable and vintage Advent speakers. Nice combo!



This website is not affiliated with or sponsored by Dynaco. To purchase SCA-80Q spares or accessories, please contact the company via their website or visit an authorised retailer.