JVC R-S33 Receiver

I always liked the JVC R-S33 receiver since I was a kid and heard it for the first time.

This 40 watt per channel Super-A receiver was second to the TOTL and has great aesthetics, just before the launch of the Black Plastic Crap (BPC) era.

This unit produces a nice clean sound with an open sound stage and plenty of power to spare. At the time "A" class hybrid amps were a bit of a trend in this era with Techics having a Super AA technology and Luxman having a Duo B circuit.

According to the Vintage Knob site the Super A circuit works by the following.

 Super-A works with an Active Bias Circuit, strapped across the input of the power stage : this ABC controls the amount of bias following the output level's variation.
By feeding them sinusoidally-varying reverse bias during their half-cycles of non-conductivity, output transistors never switch off. No switching distortion as in normal Class B, no useless heat production as in Class A.

 I love the mix of analog with the L.E.D. power output meters and tuning controls.

The looks and sound is far superior to the generation receiver prior to the this one the JVC JR-S300 which was featured on this blog a few months ago.

Here is the ad for the JVC R-S33.