The Pioneer SX780 is a classic stereo receiver that blends performance, aesthetics, and durability, making it a beloved piece among audiophiles and collectors. With a sleek brushed aluminum faceplate, wooden side panels, and robust audio output, this receiver is built to provide exceptional sound quality and reliability.

Now, this Pioneer SX780 has been professionally serviced and restored by HQaudios to bring it back to its original glory, delivering the iconic Pioneer sound with modern reliability. The unit has undergone extensive repairs and upgrades, ensuring long-term performance and retaining its vintage appeal. Perfect for anyone looking to enhance their audio setup with a dependable, high-quality vintage receiver.

• CONDITION: Excellent – Serviced, tested, and cleaned

• MODEL: Pioneer SX780

• TYPE: 2-Channel Stereo Receiver

• PROTECTION PLAN: 1-Year Warranty Included

• FREE SUPPORT: Must be used before requesting return

• SKU: 15JKE4205

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

• Tuning range: FM, MW

• Power output: 45 watts per channel into 8Ω (stereo)

• Frequency response: 5Hz to 80kHz

• Total harmonic distortion: 0.05%

• Damping factor: 30

• Input sensitivity: 2.5mV (MM), 150mV (line)

• Signal to noise ratio: 76dB (MM), 95dB (line)

• Output: 150mV (line)

• Speaker load impedance: 4Ω (minimum)

• Semiconductors: 5 x FWT, 11 x IC, 26 x transistors, 22 x diodes

• Dimensions: 18.9 x 5.51 x 12.6 inches

• Weight: 24.69 lbs

• Power Output: 45 watts per channel into 8 ohms

• Aesthetic Design: Classic brushed aluminum faceplate with sleek wood side panels

• Tone Controls: Bass, Treble, Balance, Loudness for precise sound customization

• Tuning: Clear, reliable AM/FM stereo tuning with signal strength meters

• Connectivity: Phono, Tape, and AUX inputs for versatile usage

• Durability: Heavy-duty construction designed to last

• Speaker Options: A and B speaker connections for flexible setup

This Pioneer SX780 has undergone a comprehensive restoration to ensure it performs at its peak, preserving the signature Pioneer sound while enhancing its original appearance. The receiver has been completely serviced, and all critical components have been tested, cleaned, and upgraded to restore its audio performance and visual appeal.

1. Fully Serviced

• Brushed aluminum faceplate professionally cleaned and polished

• Knobs, switches, and pushbuttons cleaned and lubricated for smooth operation

• Tone controls (bass, treble, balance, loudness) tested and calibrated to factory specifications

• Speaker terminals cleaned and retensioned for a secure connection

• Headphone output tested for full, clear stereo output

• RCA inputs cleaned and re-tensioned for optimal signal integrity

• Internal chassis cleaned, dusted, and detailed

• Rear panel cleaned, lettering preserved or touched up

2. Electronic Restoration

• Capacitors replaced across the power supply, preamplifier, tone control, phono stage, and power amplifier sections

• Power rails tested and regulated for stable, reliable output

• DC offset and bias recalibrated to original factory settings

• Transistors tested and replaced where necessary with low-noise equivalents

• Solder joints reflowed in heat-sensitive areas for long-term reliability

• Wood case restored with a premium walnut finish

3. Tuner Section

• FM/AM tuner fully aligned with a precision calibration tool for optimal reception

• FM stereo lock and mute threshold calibrated for high-quality decoding

• Gyro tuning mechanism cleaned and restrung for smooth tuning

• Dial pointer realigned, and dial tracking adjusted for precise tuning

4. Final Testing & QA

• The unit underwent a 2-hour continuous stress test to verify thermal stability, channel balance, and overall performance

• Sound output tested for clarity, balance, and low noise

• All inputs (phono, AUX, tape) tested for noise-free operation and accurate signal handling

• Listening tests performed across all inputs to ensure dynamic, distortion-free audio

• Passed HQaudios’ final quality assurance inspection

5. Result

The Pioneer SX780 now delivers exceptional warmth with a dynamic tonal range, clear output, and a dead-quiet operation. Its reliable performance, coupled with its timeless design, makes it an ideal addition to any vintage audio setup. Restored to its original glory, this receiver is ready to provide decades of high-quality sound.

Speakers: JBL L100, Klipsch Forte, Pioneer HPM-100

Turntables: Technics SL-1200, Marantz 6100, Dual 1229

Cassette Decks: Pioneer CT-F900, TEAC A-450

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

Secure Packaging:

 Each unit is carefully packed using:

• High-density foam inserts with 5-layer corrugated cartons

• Custom EPE foam corners to protect edges

• Double-wall outer box for shock resistance

• Plastic straps + handling labels to ensure safe transit

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 model, but safety and protection are always our top priority.