Pioneer SX-3700 Stereo Receiver

The Pioneer SX-3700 is a classic stereo receiver from the golden era of high-quality audio equipment. With its sleek silver faceplate, wood veneer panels, and iconic LED tuning dial, the SX-3700 combines functional reliability with a timeless design that makes it an ideal piece for both audiophiles and collectors alike.

This receiver boasts a powerful 45 watts per channel, offering clear, distortion-free audio for all your music needs. Whether you’re listening to vinyl, cassette tapes, or FM radio, the SX-3700 delivers balanced and powerful sound that brings your audio system to life. Fully serviced, tested, and restored by HQaudios, it’s ready to provide years of dependable service while maintaining its vintage charm.

• MODEL: Pioneer SX-3700
• TYPE: Stereo Receiver
• PROTECTION PLAN: 1-Year Warranty Included
• FREE SUPPORT: Must be used before requesting return
• SKU: 151THSH0313

Customer Service:

Once your item arrives, if you have questions about how your item functions or proper settings, please CONTACT US.

TRADE-IN PROGRAM

“If you have any vintage audios (receivers, speakers, cassette, reel to reel…) & want to upgrade with the serviced one, don’t hesitate to contact us for the best deal. You only need to pay for the difference between yours & mine….”

Note:

The actual color of the product may sometimes differ slightly from the photos due to lighting conditions, temperature, and the device used. Some angles in the photos may not fully reflect the product’s condition. Please read the description carefully and feel free to message us if you have any questions.

SPECS

• Tuning range: FM, MW
• Power output: 45 watts per channel into 8Ω (stereo)
• Frequency response: 10Hz to 100kHz
• Total harmonic distortion: 0.02%
• Damping factor: 40
• Input sensitivity: 2.5mV (MM), 150mV (line)
• Signal to noise ratio: 79dB (MM), 95dB (line)
• Output: 150mV (line)
• Dimensions: 18.9 x 5.71 x 14.33 inches
• Weight: 25.57 lbs
• Year: 1980

KEY FEATURES

• Power Output: 45 watts per channel (8Ω), capable of driving a variety of speakers.
• Sound Control: Bass, treble, and balance controls for precise audio tuning.
• Connectivity: Multiple input options including Phono, Tape, and Aux, ensuring flexibility for various audio sources.
• Tuning: Quartz-locked FM/AM tuner with strong sensitivity for clear reception and accurate tuning.
• Loudness Control: Enhanced bass and treble at low volume levels for a fuller sound.
• Design: Classic brushed aluminum faceplate with wood side panels for a vintage aesthetic that stands out.
• Speakers: Supports A/B speaker connections for versatile audio setups.

REFURBISHED

This Pioneer SX-3700 has undergone a full professional refurbishment to restore both performance and appearance to near-original condition. Every functional component has been serviced, and all parts have been tested for optimal operation, ensuring reliable, high-quality sound.

1. General Service & Cleaning

• Faceplate, knobs, and switches cleaned and detailed to restore the unit’s original aesthetic
• All controls deoxidized and lubricated for smooth, noise-free operation
• Original markings and finish preserved, retaining its classic vintage look

2. Electronic Inspection & Restoration

• Power supply inspected and stabilized to provide consistent, reliable output
• Aging or out-of-spec components replaced with high-quality new parts
• Bias and DC offset adjusted to factory-correct parameters for optimal sound performance
• Heat-stressed solder joints reflowed for long-term durability

3. Signal Path & Connectivity

• RCA inputs and speaker terminals cleaned, re-tensioned, and secured for maximum signal integrity
• Phono stage tested for correct gain and minimal noise
• Headphone output verified for balanced, distortion-free stereo performance

4. Tuner & Meter System

• FM/AM tuner fully aligned for stable reception and accurate tuning
• Signal strength and tuning meters verified for correct operation
• Dial and meter illumination checked and restored for even brightness

5. Final Testing & Quality Control

• Extended burn-in and real-world listening tests performed to ensure consistent performance
• All inputs, outputs, and functions tested to confirm full operational status
• Channel balance, dynamics, and thermal stability verified during testing to ensure high-fidelity audio

SUGGESTED PAIRINGS

• Speakers: JBL L100, Wharfedale Linton, KLH Model Five, Pioneer HPM-100
• Turntables: Thorens TD-160, Dual 1219, Technics SL-1200
• Tape Deck: Marantz 5025, TEAC A-2300, Akai GX-747
• Other Audio Gear: Perfectly complements other vintage gear from Pioneer, Sansui, or Marantz

🎁 Unlock an instant $100 voucher with every combo purchase.

PACKAGING & SHIPPING

Secure Packaging:

• High-density foam inserts with 5-layer corrugated cartons
• Additional internal padding and wrap for transit protection

• Double-wall outer box with corner guards and straps

Shipping Details:

• Dispatch Time: Ships within 3 business days

• Carrier: UPS Ground (tracked & insured)

• Signature Required: Yes (as buyer’s request)

• Transit Time: Typically 3–7 business days (USA)

International Shipping:

 We offer global delivery through the eBay International Shipping Program. eBay handles customs, duties, and tracking.

📦 Note: Packaging may vary slightly depending on unit size or availability, but safety and protection are always our top priority.