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Setton AS-3300

Stereophonic Amplifier (1977)

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Setton AS-3300


Power output: 55 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.1%

Damping factor: 35

Input sensitivity: 6mV (mic), 3.5mV (MM), 150mV (DIN), 150mV (line)

Signal to noise ratio: 65dB (MM), 90dB (DIN), 90dB (line)

Output: 150mV (line), 30mV (DIN)

Semiconductors: 5 x IC, 4 x dual transistors, 33 x transistors

Dimensions: 500 x 164 x 295mm

Weight: 14kg

Year: 1977



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Reviewed May 04th, 2019 by dreadtania


Bought this unit about two/three months ago, actually more because of it's beauty. It's not cheap and due to it's age could be the plagued by crackling knobs, broken bulbs or even worse dents in the aluminium frame. But just if you're lucky. You will be a proud owner of a not only a rare but very well built machine.

Let's start with the outside:

Both front panel and knobs are brushed aluminium. Sturdy aluminium handles. Unit could easily be mounted inside a rack. Contains a Plexiglas window to protect from dust settling in.
Knobs like Volume and Tone turn with soft yet sturdy steps. There are also extra buttons for Bass and Treble, Variable tone, Hi-fill and Loudness, Stereo/Mono, Tape monitoring and a dial for Mic input level. Finally there is the input selector as output selector knobs.

On the back you'll find an switching power supply with computer grade power cord (which can be detached for convenience). There are the following RCA Jack connections available; All in- and outputs come in stereo pairs:

- Phono A & B, you can also select the phono sensitivity from Low to High here.
- Tape A & B both rec and play, B also contains a handy DIN connector which I sometimes prefer over RCA Jacks.
- Tuner.
- Aux 1 & 2 input.

To complete the list you can connect up to 4 speakers in different setups at different impedance: A, B, C or A+B, A+C. Can support 4 or 8 to 16 Ohm Impedance across setups (It is also displayed in a diagram on the back).

About the inside I cannot tell you much, I am an electrician by profession but went for a full restored unit so it did not have to open/fully restore it prior to usage. The diagram however is printed on top of the unit which can come in nice.

I have searched the web for information about the Setton AS 3300, read on forums that about 400 units where ever produced worldwide (don't always trust the internet), and about lucky people finding them in barn, garage sales. In almost all cases they still work, only require some contact cleaner for those crackling knobs, replacement of a bulb or two or small repair to the speaker connectors (mine had a broken one). Fully restored units however are very well priced. Patience is important in that case.

If a proper setup is achieved you will be amazed about it's sound quality. Good Low, Medium and Highs. And a Good bass. Play around with the dials and buttons till you're pleased with.

To end this review and to give a word of advise, the unit is really worth it if you want the best in vintage HiFi, They where 'and still' are sold worldwide, but get increasingly more rare. Combine it with the Setton RS-660 AM-FM Receiver to complete the set. However, be on the lookout. It can stand the test of time but improper storage or usage can leave the unit in bad condition.

Well thanks for reading the entire Review. English is not my native language so excuse any grammar errors. I gave a 9 out of 10 rating, because 10 in my opinion should be reserved for the impossible best of the best. The Setton AS-3300 tips to that.



This website is not affiliated with or sponsored by Setton. To purchase AS-3300 spares or accessories, please contact the company via their website or visit an authorised retailer.