Pioneer SX-3700 Vintage Stereo Receiver — 45 WPC, Custom Cherry Cabinet

Pioneer SX-3700 — Fluoroscan-Era Pioneer, Restored and Re-Cabineted in Ottawa

A beautiful example of early-1980s Pioneer engineering — the Pioneer SX-3700 stereo receiver, freshly serviced and re-housed in a custom cabinet hand-built in our Ottawa shop from laminated Baltic birch and finished in genuine Ottawa Valley cherry. The SX-3700 captures Pioneer at a unique transitional moment between pure analog design and the early digital era — quartz-locked FM tuning, the unmistakable blue Fluoroscan display, and the warm musical character Pioneer’s amplifier sections were celebrated for. Made in Japan, 1980–1982.

Sound and Performance

Rated at 45 watts per channel into 8 ohms with just 0.02% THD, the SX-3700 punches well above its modest wattage figure. Pioneer’s direct-coupled amplifier topology delivers tight, controlled bass, clear midrange, and extended highs with the kind of warm, engaging character that has earned this generation of Pioneer receivers a devoted following. The 10 Hz – 100 kHz frequency response and damping factor of 40 give it confident speaker control across a wide variety of loads, and the 79 dB (MM) / 95 dB (line) signal-to-noise figures mean vinyl playback reveals subtle musical detail without intrusive hum or hiss.

Exceptional Tuner Section

The FM tuner is genuinely one of the strongest mid-range tuner sections Pioneer ever shipped. A 4-gang tuning capacitor with varactor-controlled local oscillator and Pioneer’s P.D.Q. (Pioneer Digital/Quartz) quartz-servo lock keeps frequency rock-steady, while the 5-digit Fluoroscan readout displays tuning with precision well beyond the 4-digit displays of competing mid-range receivers of the era. The dual analog dial backup provides a classic visual element, and the result is FM reception quality that rivals tuners from far more expensive Pioneer models.

Design and Controls

The brushed silver faceplate is anchored by Pioneer’s iconic blue Fluoroscan digital display — the same striking glowing-blue meters seen on the SX-3800 — paired with traditional analog controls for that perfect transitional-era look. Independent bass, treble, and balance controls; MM phono input; auxiliary line input; two tape inputs with independent monitoring; stereo headphone output; dual speaker outputs supporting two pairs simultaneously; and two switched AC outlets on the rear for convenient turntable and accessory power. The control layout is clean, the action is smooth, and the visual presence is unmistakably Pioneer.

Service History — What’s Been Done

This SX-3700 has been freshly serviced and fully verified across all functions. The Fluoroscan display glows bright and even, the power meter responds accurately to signal input, FM tuning is precise and stable, all inputs deliver clean signal, and all controls operate smoothly without scratching or intermittence. Brought back to factory specification both electrically and operationally — ready to anchor a vintage system for many years to come.

The Custom Cherry Cabinet

The original Pioneer wooden case has been replaced with a brand-new custom cabinet, hand-built in our Ottawa shop from laminated 3/8-inch Baltic birch plywood and milled to the original Pioneer cabinet’s exact dimensions and profile detail, then veneered with genuine Ottawa Valley cherry. Baltic birch is the gold standard for fine cabinetry — void-free, dimensionally stable, and dramatically stronger and more rigid than the particleboard Pioneer used in the original case — and the result is a receiver enclosure both visually stunning and mechanically superior to the factory original.

The Ottawa Valley cherry veneer is solid, locally sourced, and finished to show off the wood’s warm reddish-gold grain. Cherry darkens and deepens beautifully with age and exposure to light, so this cabinet will only become more striking with the years. The pairing with the brushed silver faceplate and glowing-blue Fluoroscan display is genuinely stunning in person.

Pioneer SX-3700 Specifications

• Tuning range: FM, MW (AM)
• Power output: 45 W/ch into 8 ohms (stereo)
• Frequency response: 10 Hz – 100 kHz
• Total harmonic distortion: 0.02%
• Damping factor: 40
• Input sensitivity: 2.5 mV (MM phono), 150 mV (line)
• Signal-to-noise ratio: 79 dB (MM phono), 95 dB (line)
• FM tuner: 4-gang variable capacitor, P.D.Q. quartz-servo lock
• Display: 5-digit blue Fluoroscan digital readout, analog dial backup
• Tone controls: Independent bass, treble, balance
• Phono input: 1 x MM
• Tape inputs: 2 with independent monitoring
• Outputs: Dual speaker outputs (two pairs), stereo headphone
• AC outlets: 2 switched (rear)
• Year of introduction: 1980–1982
• Country of manufacture: Japan
• Dimensions (W × D × H): 480 × 364 × 145 mm (18.9 × 14.3 × 5.7 inches)
• Weight: 11.6 kg (25.6 lbs)
• Cabinet: Brand-new custom build, laminated 3/8″ Baltic birch plywood milled to the original Pioneer cabinet’s dimensions and profile detail, veneered with genuine Ottawa Valley cherry

Why This SX-3700 Stands Apart

A musical, beautifully restored Pioneer mid-range flagship from the Fluoroscan era — properly serviced, with one of Pioneer’s finest mid-range FM tuner sections, and re-housed in a one-of-a-kind custom Ottawa Valley cherry cabinet that no production receiver from any era has ever matched. Made in Japan, restored and re-cabineted in Ottawa.

⚠️ Important Information for International Buyers

This receiver is configured for North American 110/120V power. Buyers outside North America will require a step-down transformer and appropriate plug adapter.

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Backed by Radique’s 90-day warranty and our Perpetual Trade-Back Program. When you’re ready to move on, we’ll take it back. That’s the Radique difference.

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