Pure Class-A Japanese Craftsmanship & Reference AAVA Preamp Topology | Available at Trimira Audio
The Accuphase E-600 is a high-end integrated stereo amplifier combining Accuphase’s Pure Class-A output stage with its proprietary AAVA (Accuphase Analog Vari-gain Amplifier) volume-control architecture. Engineered and hand-built in Yokohama, Japan, this certified trade-in unit delivers 30 W per channel into 8 Ω, with power increasing to 60 W into 4 Ω and 120 W into 2 Ω.
The E-600 uses triple parallel push-pull power MOS-FETs in an instrumentation amplifier configuration, complemented by Accuphase’s MCS+ and current-feedback technologies. A substantial toroidal power supply and large filtering capacitors provide the current reserves required for demanding loudspeaker loads.
Its AAVA volume-control system avoids conventional variable resistors in the audio signal path, while separate preamplifier and power-amplifier operation and two rear option-board slots provide additional system flexibility.
Key Features & Technological Innovations
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Pure Class-A Triple Parallel Push-Pull Output: Delivers 30 W @ 8 Ω, 60 W @ 4 Ω, and 120 W @ 2 Ω using high-current MOS-FET output devices.
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AAVA Volume Control: Accuphase’s analogue vari-gain architecture provides precise volume adjustment without conventional variable resistors in the signal path.
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Instrumentation Amplifier & MCS+ Topology: Balanced circuit architecture is designed to reduce noise and improve signal integrity.
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Substantial Toroidal Power Supply: Large toroidal transformer and twin 47,000 µF filtering capacitors provide substantial energy storage.
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Separate Preamp & Power Amp Operation: Pre-out and main-in connections allow flexible system integration, including bi-amplification and home theatre applications.
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Dual Option Board Slots: Supports compatible Accuphase digital DAC and phono option boards.
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Logic-Controlled Relays & Displays: High-reliability signal switching and front-panel metering provide convenient system control.
Technical Specifications
| Specification |
Technical Detail |
| Amplifier Topology |
Pure Class-A Integrated Stereo Amplifier (Triple Parallel Push-Pull MOS-FET) |
| Continuous Average Output Power (8 Ohms) |
30 Watts per channel (both channels driven, 20 Hz – 20 kHz, 0.05% THD) |
| Continuous Average Output Power (4 Ohms) |
60 Watts per channel (both channels driven, 20 Hz – 20 kHz, 0.05% THD) |
| Continuous Average Output Power (2 Ohms) |
120 Watts per channel (both channels driven, 20 Hz – 20 kHz, 0.05% THD) |
| Continuous Average Output Power (1 Ohm) |
150 Watts per channel (with music signals) |
| Total Harmonic Distortion (THD) |
0.05% (4 to 16 Ohm loads, 20 Hz – 20 kHz) |
| Intermodulation Distortion (IMD) |
0.01% |
| Frequency Response (High-Level Input) |
20 Hz – 20 kHz (+0, -0.2 dB); 3 Hz – 150 kHz (+0, -3.0 dB at 1W output) |
| Damping Factor |
500 (with 8-Ohm load, 50 Hz) |
| Signal-to-Noise Ratio (A-Weighted) |
101 dB (High-Level Line Inputs); 115 dB (Power Amplifier Input) |
| Analogue Line Inputs |
2 × Balanced XLR, 5 × Unbalanced RCA (plus Recorder Play/Rec RCA) |
| Pre-Out / Main-In Connections |
1 × Balanced XLR Pre-Out, 1 × Unbalanced RCA Pre-Out, 1 × Balanced XLR Main-In, 1 × Unbalanced RCA Main-In |
| Speaker Outputs |
2 Pairs (A / B Switching) Heavy-Duty Oversized Insulated Binding Posts |
| Headphone Output |
1 × 6.35mm (1/4-inch) Stereo Jack (suitable for 8 Ohms or higher) |
| Expansion Slots |
2 × Rear Option Board Slots (compatible with Accuphase DAC and Phono boards) |
| Dimensions (W × H × D) |
465 mm × 191 mm × 428 mm |
| Net Weight |
24.7 kg (54.5 lbs) |
Certified Trade-In Assurance at Trimira Audio
The Accuphase E-600 is offered as a certified trade-in unit at Trimira Audio. Pre-owned and trade-in equipment is bench tested, thermally verified, and auditioned by the Brisbane technical team.
Contact Trimira Audio to discuss the unit’s cosmetic condition, included accessories, warranty coverage, or to arrange a private demonstration.
