Pioneer SX-550 - Retrotech Audio - Vintage Audio

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Pioneer SX-550

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Pioneer SX-550
1970's Vintage Tuner Amp


Pioneer SX-550

1970’s Vintage Tuner Amp

This classic 1970’s ‘Made in Japan’ receiver has had pots & switches cleaned and is in full and perfect working order. Smooth, sweet, crackle-free and with all illumination bulbs working. Picture 4 was taken while just using a length of speaker wire as an improvised aerial.

Physical condition of the actual receiver is quite nice, but the removable side-panels are pretty rough and could do with re-finishing (see close-up pictures). This is reflected in the price.


• Tuning range: FM, MW
• Power output: 20 watts per channel into 8Ω (stereo)
• Frequency response: 10Hz to 60kHz
• Total harmonic distortion: 0.3%
• Damping factor: 25
• Input sensitivity: 7.5mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)
• Signal to noise ratio: 70dB (MM), 90dB (line)
• Output: 150mV (line), 30mV (DIN)
• Speaker load impedance: 4Ω (minimum)
• Semiconductors: 3 x FET, 5 x IC, 28 x transistors, 21 x diodes
• Dimensions: 448 x 141 x 307mm
• Weight: 9.4kg
• Year: 1976

Click here for further information from the excellent website

The last picture is from the 1978 Hi-Fi Year Book.

This comes with mains cable and a print-out copy of the original user manual.


Payment accepted via PayPal, Bank Transfer, Personal Cheque or cash on collection.

Economical worldwide shipping via UPS or FedEx – Expertly packed, tracked and insured.


Please contact us either by telephone on 01883 340073
or by sending and email to
if you are interested in purchasing this item.


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