Accuphase
Accuphase A-300 Class-A Monophonic Power Amplifier
Accuphase A-300 Class-A Monophonic Power Amplifier
Accuphase A-300 Class-A Monophonic Power Amplifier
Pure Class A monoblock power with extraordinary drive, control, and silence.
The Accuphase A-300 Class-A Monophonic Power Amplifier is a statement of power and precision from one of Japan’s most respected high-end audio brands. Delivering 125 watts into 8 ohms, 250 watts into 4 ohms, 500 watts into 2 ohms, and up to 1,000 watts into 1 ohm, the Accuphase A-300 provides monumental current delivery and complete speaker control while maintaining the harmonic purity of true Class A operation.
Engineered with a 20-parallel push-pull MOSFET output stage, the Accuphase A-300 achieves stunning linearity and ultra-low distortion. Its fully balanced circuit design, current-feedback topology, and Accuphase Balanced Remote Sensing system ensure ultra-quiet operation with a damping factor of 1,000 and a signal-to-noise ratio up to 135 dB. This makes the A-300 one of the quietest and most dynamically expressive amplifiers ever built.
Internally, the Accuphase A-300 features a massive toroidal transformer and large filtering capacitors for uncompromised current stability. Its dual-layer chassis construction and direct-coupled MOSFET speaker output system minimize interference and mechanical noise. The result is a mono power amplifier that brings a lifelike presence, immense dynamic power, and striking tonal smoothness to any high-end system.
Designed for ultimate stereo or multi-channel systems, the Accuphase A-300 can be used alone per channel, in bridged configurations, or as part of a bi-amplified setup. With its polished aluminum chassis, large precision meters, and impeccable craftsmanship, the A-300 reflects Accuphase’s legendary attention to performance and beauty.
For assistance or product questions, call 443-402-5055 or text 443-402-5064 to reach our team. All Elite Audio is an authorized Maryland dealer with a full home audio showroom.
Key Specifications:
• Rated Output (Mono): 125 W into 8 Ω; 250 W into 4 Ω; 500 W into 2 Ω; 1,000 W into 1 Ω
• Amplifier Class: Pure Class A
• Output Devices: 20-parallel push-pull MOSFETs
• Damping Factor: ≥ 1,000
• Signal-to-Noise Ratio: 130 dB (MAX), 135 dB (–12 dB gain)
• Total Harmonic Distortion: 0.01%
• Frequency Response: 0.5 Hz–160 kHz (+0/–3 dB)
• Inputs: Balanced XLR and Unbalanced RCA
• Gain Settings: MAX, –3 dB, –6 dB, –12 dB
• Input Sensitivity: 1.26 V for rated output
• Input Impedance: 40 kΩ (balanced), 20 kΩ (unbalanced)
• Dimensions (W × H × D): 465 × 240 × 515 mm (18.3″ × 9.4″ × 20.3″)
• Weight: 46 kg (101.5 lbs)
• In Stock
Top 20 Questions About the Accuphase A-300 Class-A Monophonic Power Amplifier
What type of amplifier is the Accuphase A-300?
The Accuphase A-300 is a pure Class A monoblock power amplifier built for ultra-high-end stereo and multi-channel systems.
How much power does the Accuphase A-300 deliver?
It delivers 125 watts into 8 ohms, 250 watts into 4 ohms, 500 watts into 2 ohms, and 1,000 watts into 1 ohm, ensuring immense drive and control.
What makes the Class A design of the Accuphase A-300 special?
Class A operation ensures a constant current flow, eliminating crossover distortion and providing unmatched smoothness and linearity.
What is the damping factor of the Accuphase A-300?
With a damping factor of 1,000 or greater, it maintains firm grip and precision over any connected loudspeaker.
How quiet is the Accuphase A-300?
The signal-to-noise ratio reaches up to 135 dB, delivering extraordinary background silence and micro-detail resolution.
What inputs does the Accuphase A-300 provide?
It includes both balanced XLR and unbalanced RCA inputs for seamless system integration.
Can two Accuphase A-300 units be bridged or bi-amped?
Yes, the A-300 can be used in bridged mono configurations or as part of a bi-amp setup for expanded system flexibility.
What kind of output devices are used in the Accuphase A-300?
It features 20-parallel push-pull MOSFETs for stable, linear high-current performance.
Is the Accuphase A-300 suitable for low-impedance speakers?
Absolutely. It operates stably down to 1 ohm, making it ideal for speakers that require strong current drive.
How does the Accuphase A-300 sound?
It delivers breathtaking detail, a rich midrange, and effortless dynamics with remarkable smoothness and realism.
Does the Accuphase A-300 run hot during operation?
Yes, as a pure Class A amplifier it runs warm and should be given adequate ventilation.
What protection systems are included in the Accuphase A-300?
It uses MOSFET-based output protection with non-mechanical speaker switching and overload safeguards.
What is the total harmonic distortion of the Accuphase A-300?
The THD is just 0.01%, ensuring extraordinary clarity and transparency.
What is the frequency response of the Accuphase A-300?
The frequency response extends from 0.5 Hz to 160 kHz, maintaining accuracy across the full audible spectrum.
What is the power supply design of the Accuphase A-300?
It includes a massive toroidal transformer and large capacitors for consistent, low-noise power delivery.
Where is the Accuphase A-300 manufactured?
The amplifier is designed and built in Japan by Accuphase, renowned for exceptional craftsmanship and engineering.
What are the physical dimensions and weight of the Accuphase A-300?
It measures 465 × 240 × 515 mm and weighs 46 kg (101.5 lbs).
Is the Accuphase A-300 compatible with preamplifiers from other brands?
Yes, it works flawlessly with any high-quality preamplifier offering standard XLR or RCA outputs.
What is the warranty on the Accuphase A-300?
The amplifier includes a 3-year manufacturer warranty through authorized Accuphase dealers.
How can I get expert help with the Accuphase A-300?
For assistance or product questions, call 443-402-5055 or text 443-402-5064 to reach our team at All Elite Audio, your authorized Maryland dealer with a full home audio showroom.
