Accuphase A-80 Class-A Stereo Power Amplifier

Product Description

The Accuphase A-80 Stereo Power Amplifier is a flagship Class AB power amplifier, delivering 65W per channel into 8 ohms, 130W into 4 ohms, and 260W into 2 ohms with an extraordinary damping factor of 1,000 for unparalleled speaker control. Succeeding the A-75, it features a 10-parallel push-pull power MOS-FET output stage, MCS+ circuitry, and a fully balanced signal path, ensuring pristine, dynamic sound with exceptional clarity. Encased in a sleek champagne gold chassis with large, backlit VU meters, the A-80 embodies Accuphase’s Japanese craftsmanship, making it the ultimate choice for audiophiles seeking reference-grade performance in high-end hi-fi systems.  

Key Features  

• Class AB Power Output: Delivers 65W per channel into 8 ohms, 130W into 4 ohms, and 260W into 2 ohms, with linear power delivery for demanding speaker loads.  
• 10-Parallel Push-Pull Output: Ten parallel push-pull power MOS-FETs per channel, mounted on massive heatsinks, provide high-current amplification for dynamic, distortion-free sound.  
• MCS+ Circuitry: Multiple Circuit Summation enhances signal purity, reducing noise by up to 30% compared to the A-75 for a transparent, detailed soundstage.  
• Ultra-High Damping Factor (1,000): Optimized MOS-FET switches with ultra-low on-resistance and refined signal paths ensure precise control, delivering tight, articulate bass.  
• Robust Power Supply: Two massive toroidal transformers and four 82,000μF filtering capacitors (328,000μF total) provide stable, clean power for high-current demands.  
• Fully Balanced Design: Balanced instrumentation amplifier topology with current feedback minimizes interference, ensuring superior phase accuracy and noise rejection.  
• Versatile Connectivity: Includes 1 RCA unbalanced and 1 XLR balanced input per channel, with speaker terminals supporting A/B configurations and bi-wiring. 
• Advanced Protection: MOS-FET-based circuitry protects against short-circuiting, DC voltage, and overheating, ensuring reliability without relay contact resistance.  
• Bridged Mono Operation: Configurable as a monoblock, delivering 260W into 8 ohms, 520W into 4 ohms, and 1,040W into 2 ohms for high-power setups.  
• Elegant Design: Champagne gold panel, backlit VU meters with adjustable brightness, and a robust chassis reflect Accuphase’s meticulous craftsmanship.

Why Choose the Accuphase A-80?

The A-80 is a pinnacle of Accuphase’s engineering, incorporating technologies from flagship models to deliver a vibrant, noise-free soundstage with immense power and precision. Its 10-parallel MOS-FET stage and enhanced MCS+ circuitry reduce noise and distortion, offering a refined, open sound that excels with complex loads. Users praise its dynamic range, detailed imaging, and ability to drive low-impedance speakers, though some note a slightly forward treble that benefits from careful preamplifier and speaker pairing. With a damping factor of 1,000, bridged mono capability, and handcrafted Japanese build quality, the A-80 is a versatile, future-proof choice for high-end stereo systems, rivaling amplifiers at significantly higher price points.  

Product Specifications 

• Power Output (Stereo): 65W/channel (8 ohms), 130W/channel (4 ohms), 260W/channel (2 ohms)  
• Power Output (Bridged Mono): 260W (8 ohms), 520W (4 ohms), 1,040W (2 ohms)  
• Amplifier Type: Class AB, 10-parallel push-pull power MOS-FETs  
• Damping Factor: 1,000  
• Frequency Response: 20 Hz–20 kHz (+0, -0.2 dB) at rated output; 0.5 Hz–160 kHz (+0, -3 dB) at 1W  
• Total Harmonic Distortion: 0.03% (2–16 ohms)  
• Signal-to-Noise Ratio: 123 dB (max gain)  
• Input Sensitivity: 0.95V (8 ohms, rated output)  
• Inputs: 1 RCA unbalanced, 1 XLR balanced per channel  
• Outputs: Speaker terminals (A/B, bi-wiring capable)  
• Power Supply: Dual toroidal transformers, four 82,000μF capacitors  
• Controls: Gain switch (MAX, -3 dB, -6 dB, -12 dB), meter operation switch  
• Dimensions: 18.3" W x 9.3" H x 18.7" D (465 x 237 x 475 mm)  
• Weight: 97.9 lbs (44.4 kg)  
• Warranty: Contact authorized dealer for details

What’s Included  

• Accuphase A-80 Stereo Power Amplifier  
• Power cord  
• User manual

Perfect For  

• Audiophiles seeking reference-grade Class AB amplification for high-end stereo systems  
• High-power setups using bridged mono mode for demanding speakers  
• Hi-fi enthusiasts needing a robust, elegant power amplifier with premium performance