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JBL SA600

Solid State Amplifier (1966)

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JBL SA600

Specifications

Power output: 40 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.2%

Damping factor: 23

Input sensitivity: 4mV (MM), 250mV (line)

Signal to noise ratio: 72dB (MM), 85dB (line)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 36 x transistors, 19 x diodes

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Reviewed Jan 12th, 2018 by Guy Clark

I am an EE as well as a symphonic trumpet player. I found my SA600 at a flea market in the Chicago area back while I was in engineering school around 1978. I was especially impressed with the sound (or lack, thereof) of this amplifier. I have to say that it's the cleanest sounding amplifier I've ever heard.

I'd listen to the recordings I'd make of my various groups and I remember being struck by the clarity of the sound, especially when compared to other stereo gear I'd collected.

Somewhere along the line, I retired it to use an amplifier that my wife had gotten, mainly because hers had more inputs. This was important when the Stereo became Home Entertainment Center.

I recently pulled my JBL off the shelf and hooked it up, and found to my dismay that one channel isn't working. Fortunately, when I got the unit back in the day, I wrote to JBL and received a service manual and users' manual. I'll have to dig them up, and see what is up with the amp. It could be a dirty switch, but I don't know yet. This is definitely an amp worth fixing!!

The only reason I didn't give it a 10 rating is the lack of inputs. Otherwise, it's truly great in my estimation!

 

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