Pioneer SA-7500II Stereo Amplifier

The Pioneer SA-7500II is a stunning vintage stereo amplifier known for its robust build and dynamic sound quality. Released in the 1970s, it is a favorite among audiophiles and collectors for its impressive power output and versatile features. This amplifier is built with precision, offering a blend of clean, natural sound and high-end audio performance.

Restored by HQaudios, this Pioneer SA-7500II is in great condition and has been brought back to its original glory through thorough servicing. Every aspect of this amplifier has been meticulously restored to ensure it not only sounds great but also looks exceptional. Whether you’re a long-time enthusiast or just starting your vintage audio collection, this amplifier will provide you with years of listening enjoyment.

• Model: Pioneer SA-7500II
• Type: Stereo Amplifier
• Protection Plan: 1-Year Warranty Included
• Free Support: Must be used before requesting return
• SKU: 15TTE0697

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

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

Frequency response: 10Hz to 40kHz

Total harmonic distortion: 0.1%

Damping factor: 30

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

Signal to noise ratio: 73dB (MM), 95dB (line)

Output: 150mV (line)

Semiconductors: 2 x IC, 26 x transistors, 17 x diodes

Dimensions: 14.96 x 5.47 x 12.13 inches

Weight: 20.06 lbs

Year: 1976

KEY FEATURES:

Power Output: 40 watts per channel at 8 ohms, delivering clear and powerful audio for various setups

Tone Controls: Bass, Treble, Balance, and Loudness for flexible sound adjustment

Functionality: Phono, Tape, and AUX inputs for multiple audio source connectivity

Design: Brushed aluminum faceplate with a clean, minimalist aesthetic

Durability: Solid construction for long-lasting performance

Connectivity: Dual speaker connections for versatile audio system setups

REFURBISHED

This Pioneer SA-7500II has undergone a comprehensive restoration by HQaudios to ensure both high performance and a pristine visual presentation. Every part has been serviced, cleaned, and calibrated to meet original specifications, while maintaining the unit’s vintage appeal.

1. Fully Serviced
   

• Brushed aluminum faceplate cleaned and polished to restore its original luster
• Knobs, switches, and pushbuttons cleaned and lubricated for smooth, noise-free operation
• Tone controls (bass, treble, balance) tested and calibrated to factory specifications
• Speaker terminals cleaned and retensioned for secure, reliable connections
• Headphone output tested for full, clear stereo output
• RCA inputs cleaned and re-tensioned for optimal signal integrity
• Internal chassis cleaned, dusted, and detailed

1. Electronic Restoration
   

• Capacitors replaced across the power supply, preamplifier, tone control, and power amplifier sections
• Power rails tested and regulated for stable output
• DC offset and bias recalibrated to factory specifications
• Transistors tested and replaced where necessary with low-noise equivalents
• Solder joints reflowed in heat-sensitive areas to ensure long-term reliability

2 . Signal Path & Connectivity

• RCA jacks and speaker terminals cleaned and secured
• Phono stage tested for correct gain and low noise performance
• Headphone output tested for balanced, distortion-free performance

3.Tuner & Meter System

• FM/AM tuner fully aligned for stable reception
• Signal strength and tuning meters calibrated for accurate readings
• Dial and meter illumination restored for uniform brightness

4. Final Testing & Quality Control

• Power-on surge test and thermal monitoring
• Verified output on A/B speaker terminals and headphone jack
• Measured DC offset and idle current stability over extended operation
• AM/FM tuner reception tested under real-world antenna conditions
• All inputs tested (Phono, AUX, Tape) for full channel integrity
• 2-hour continuous playback test to ensure thermal and electrical stability
• Passed HQaudios’ final quality control checklist and approved for sale

RESULT

The Pioneer SA-7500II now delivers exceptional sound performance with crystal-clear clarity and full-range dynamics. It has been restored to a high standard, with all functions thoroughly tested and working perfectly. Despite some minor surface marks on the bottom, the amplifier’s functionality and aesthetic appeal remain uncompromised, making it a great addition to any vintage audio setup.

SUGGESTED PAIRINGS

• Speakers: JBL L100, Klipsch Heresy, Pioneer HPM-60
• Turntables: Technics SL-1200, Thorens TD-160, Dual 1229
• Cassette Decks: Pioneer CT-F900, Akai GX-747, TEAC A-2300

🎁 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.