Pioneer SX-650 Vintage Stereo Receiver – 35 WPC, Level 3 Service

Pioneer SX-650 Vintage Receiver – Serviced, 35 WPC, Custom Ottawa Valley Cherry Wood Cabinetry (Level 3 Service)

This Made in Japan Pioneer SX-650 from 1976 delivers 35 watts per channel of legendary silver-face Japanese hi-fi, brought back to near mint condition through Radique’s most thorough service tier. Lifted from its original faux walnut vinyl wrap into furniture-grade custom Ottawa Valley cherry wood cabinetry, this SX-650 is the kind of statement piece you build a listening room around — warm-toned cohesion with your vintage furniture, audiophile-grade restoration under the hood.

Pair it with the Radique RA-Twin II Bluetooth Streamer and this 1970s legend handles modern streaming from your phone, tablet, or laptop — without sacrificing an ounce of vintage character.

Service & Condition (Level 3):

• Thorough testing, deep cleaning of all pots and switches (deoxidation)
• Full re-cap (minus mains unless required), re-flow where necessary
• Bias and DC offset checked and adjusted
• Blown lamps replaced
• Thorough post-service testing
• Custom Ottawa Valley cherry wood cabinetry exclusive to Radique Audio
• Faceplate, knobs, and meters in near mint physical condition
• Fully tested and performing at original Pioneer specification

Features:

• 35 watts per channel into 8Ω (stereo)
• High filter & FM muting
• Two tape in/outs, phono, and aux/mic inputs
• Tuning & signal meters
• Classic Pioneer click-stop tone controls with center defeat

Specifications:

• Power output: 35 WPC into 8Ω
• Frequency response: 10Hz–50kHz
• Total harmonic distortion: 0.3%
• Damping factor: 30
• Input sensitivity: 7mV (mic), 2.5mV (MM), 150mV (DIN/line)
• Signal-to-noise ratio: 70dB (MM), 90dB (line)
• Output: 150mV (line), 30mV (DIN)
• Speaker load impedance: 4Ω minimum
• Dimensions: 19″ x 6″ x 14.5″ (480 x 149 x 371 mm)
• Weight: 29 lbs (13.1 kg)
• Origin: Made in Japan

Why Choose Radique?
At Radique Audio, our mission is to give vintage gear a second life and keep legendary components in homes — not landfills. Every Pioneer we restore reflects our passion for music, sustainability, and craftsmanship. Our premium shipping uses heavy-duty 275 lb-test double-wall boxes (not single-wall), industrial-grade bubble wrap, and extra-strong tape — shipping damage is virtually unheard of. Watch our unboxing video.

📦 Ready to ship promptly after purchase

⚡ Voltage Information

This receiver is set up for North American 110/120V power. If you’re outside North America, you’ll need a step-down transformer and proper adapter. Consult an electrician if unsure.

Radique Advantages

• Radique Warranty
• Perpetual Trade-Back Program
• Exclusive Ottawa Valley cherry wood cabinetry craftsmanship
• 275 lb-test double-wall packaging ensures your vintage component arrives safely

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