hifi engine

Manual Library / Dynaco

Dynaco SCA-35

Stereo Integrated Amplifier (1971-72)

add a review (1 review)

Dynaco SCA-35


The SCA-35 is a high quality stereo preamplifier and amplifier combination which serves as a control centre for various program sources such as phonograph, tape and radio.

The SCA-35 permits selection of the program source desired, modification of the tonal characteristics of the sound source, and change of volume; it provides output connections for loudspeakers and headphones.

The connection of various types of program sources is made on the back panel through the several sockets provided. The shielded audio cables and plugs supplied with the program source equipment are used for connection between these components. There are screw terminals for connection of loudspeakers to the unit. The upper row of inputs and outputs is used for the left channel, and the bottom row for the right channel.

The front panel controls have been designed to make the operation of the SCA-35 simple and obvious while providing suitable flexibility. Although it is possible to enjoy use of the SCA-35 using only the power and selector switches and the volume control, knowledge of the function of the other switches and controls can provide increased listening pleasure.


Power output: 17.5 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 1%

Input sensitivity: 4mV (MM), 1000mV (line)

Signal to noise ratio: 70dB (MM), 80dB (line)

Valve complement: 2 x 12AX7, 2 x 7199, 4 x 6BQ5/EL-84/7189

Finish: champagne gold anodized aluminium front panel


Related Catalogues

High Fidelity 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.


 Login or register to post reviews

Reviewed Jul 23rd, 2018 by Txt

My favorite tube integrated amp. There’s a certain synergy between the SCA-35 and digital sources, as the tube warmth definitely takes some of edge off of digital source material. Bypassing the tone controls is an easy mod, and results in a cleaner signal path. You’ll need fairly efficient speakers to make the most of the 12-15 watts per channel that this amp delivers, so those modern Elac B5s unfortunately are not a good match. One thing to watch out for is the cost of re-tubing these amps as the 7199 tubes are long out of production (and therefore super pricey) and you’ll need a matched quartet of 6BQ5 output tubes for the best sound.



re: SCA-35

It was introduced in 1964.
It was sold both factory wired and as a kit.
The most visible difference is that the factory wired ones have rivets in many places where the kits have screws.
The factory wired units also should have a label with a serial number, where the first two digits stands for the model (15 for SCA-35) and the third digit for the year of production. Nice amps!

re: SCA-35

Simply an excellent little tube amp.

The key is to connect it to some efficient speakers and you will love the sound. More than enough power and one of Dynaco's very early 70s built to last amplifiers.

re: SCA-35

I fully agree, as a student in the early 70th I built several and sold them. I loved the sound but my speakers wanted more power... I should have kept one

This website is not affiliated with or sponsored by Dynaco. To purchase SCA-35 spares or accessories, please contact the company via their website or visit an authorised retailer.