Pioneer SX-550 Vintage Stereo Receiver – 20 WPC, Cherry Wood

Pioneer SX-550 — A Silver-Face Icon, Wrapped in Cherry

The Pioneer SX-550 is the receiver that made 1970s hi-fi unforgettable. 20 watts per channel of warm, musical Pioneer power, an AM/FM tuner that still pulls in stations like it’s brand new, and that legendary silver-face panel that defined an era of audio. This particular SX-550 has been brought back to peak performance by the Radique Audio service team — and then we did something special: we lifted its original cabinet out of its tired faux-walnut vinyl wrap and re-veneered it in furniture-grade Ottawa Valley cherry. The result is an heirloom-grade vintage receiver that looks as stunning on your shelf as it sounds in your room.

🔧 Service & Condition

• Full bench service: deoxidized controls, switches and selectors
• Tested across all inputs, both speaker A/B channels, headphone and tape outs
• AM/FM tuner aligned and confirmed receiving
• Cosmetic condition: excellent — clean faceplate, knobs and dial glass
• Output verified into 8Ω test loads — clean signal, balanced channels
• 90-day Radique Audio warranty included

🎚️ Features

• 20 watts per channel into 8 ohms, both channels driven
• AM/FM stereo tuner with signal strength and centre-tune meters
• Phono (MM), 2x Aux, Tape monitor with dubbing
• Speaker A/B switching, headphone jack, FM muting, loudness contour
• Bass, treble, balance and stepped volume controls
• Pioneer’s classic 1970s silver-face cosmetics

📐 Specifications

• Power output: 20 WPC into 8Ω, both channels driven
• Frequency response: 7 Hz – 80 kHz
• Total harmonic distortion: 0.5%
• Damping factor: 25
• Input sensitivity: 2.5 mV (MM phono), 150 mV (Aux / Tape)
• Signal-to-noise ratio: 65 dB (MM phono), 85 dB (Aux)
• Speaker load impedance: 4–16Ω
• Dimensions: 18.5″ x 5.25″ x 13.75″ (470 x 133 x 349 mm)
• Weight: approx. 22 lbs (10 kg)

🎵 Pair It With Streaming — RA-Twin II

Want to stream Spotify, Apple Music or YouTube through this gorgeous vintage receiver? Add our RA-Twin II Bluetooth Streamer — a Radique-designed bridge that connects modern wireless audio to classic 1970s gear without compromising sound quality. It’s the easiest way to enjoy your music library on hardware that was built to last.

💡 Why Choose Radique

• Serviced, not just sold — every vintage receiver passes through our bench before listing
• Sustainable by design — we restore and recycle vintage audio instead of letting it end up in landfills
• Locally crafted cabinets — Ottawa Valley cherry wood, handmade by our team
• Heirloom packaging — every order ships in 275 lb test double-wall boxes with industrial-grade bubble wrap and reinforced tape, so shipping damage is virtually unheard of. Watch our unboxing video
• Perpetual Trade-Back Program — bring it back any time for trade credit on your next upgrade

⚡ Voltage & Compatibility

This unit operates on standard North American 120V / 60Hz power. International buyers will need a step-down transformer and appropriate plug adapter. Original Pioneer phono stage supports moving-magnet cartridges. Speaker outputs are 8Ω optimised but will drive 4–16Ω loads.

🏆 The Radique Advantage

• Bumper-to-Bumper Warranty — every unit covered front to back
• Perpetual Trade-Back Program — trade credit toward your next upgrade, forever
• Exclusive Ottawa Valley cherry wood cabinetry — handcrafted in Ottawa
• Consistent, high-quality 275 lb test packaging for safe Canada-wide delivery

📺 Curious about our small but growing audio business? Check out our YouTube channel for behind-the-scenes videos and more!