AM/FM Stereo Receiver (1978-80)
The Pioneer SX-790 is an AM/FM stereo receiver with direct-coupled DC power amplifier giving a continuous power output of 45 watts per channel.
The pre-amplifier circuitry is class-A like top of the line receivers and the tuner section is packed with the same Pioneer exclusive ICs.
The tone control network is of CR-type with centre flat position circuited after the control amplifier itself.
Other features include push-button speaker switches and meters for station cenetring and signal strength.
Tuning range: FM, MW
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.05%
Signal to noise ratio: 76dB (MM), 90dB (line)
Dimensions: 480 x 140 x 320mm
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Reviewed Jan 16th, 2016 by ilkkasuni
These late-70's Pioneer amps and stereo receivers just were pure joy. Manufacturers were struggling to gain market share, and they put their best effort even in the consumer class products.
Very warm, tube-like sound, smooth yet rich and powerful throughout the range. I bought mine in 1979, and only nowadays [at the age of 35+] starts she sounding to possibly need recapping.
I audio quality, this little beast has beaten dozens of consumer class amps I have owned, as the years passed. Amazing ability to handle even big 4 ohm speakers.
The only bad thing to say about this receiver [the amp] is the horribly awkwardly behaving balance control.