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About the A-80
The Accuphase A-80 is a high-end Class A stereo power amplifier, developed as a stereo version of the 50th anniversary A-300 model. It features a 10-parallel push-pull power MOS-FET output stage optimized for large linear output power of 65 W into 8 ohms, 130 W into 4 ohms, 260 W into 2 ohms, and 520 W into 1 ohm. Incorporating advanced technologies such as current feedback amplification, Balanced Remote Sensing, MCS+ circuitry, instrumentation amplifier, and a fully discrete low-noise signal input section, it achieves ultra-low distortion, a high damping factor of 1,000, and superior noise performance. The amplifier includes a massive high-efficiency toroidal transformer and 120,000 μF filtering capacitors (60,000 μF x 2), dual-mono construction, 4-step gain control (MAX, –3 dB, –6 dB, –12 dB), bi-amping and bridged mono capability (260 W into 8 Ω bridged), large analog power meters with hold time switching, and robust protection circuits. Housed in a heavy aluminum chassis with high-carbon cast iron insulator feet, it exemplifies Japanese craftsmanship for driving demanding speakers with warmth, clarity, and realism.
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