Introduction

The Accuphase E-3000 is a high-performance Class AB integrated amplifier that brings precision, power, and purity to your two-channel system. Leveraging technologies derived from Accuphase’s flagship separates, it delivers 100 watts per channel into 8 Ω and 150 watts into 4 Ω, with exceptional clarity and dynamic impact at any listening level.

Design

At the heart of the E-3000 is the AAVA (Accuphase Analog Vari-gain Amplifier) volume control, which uses the ANCC (Accuphase Noise and distortion Cancelling Circuit) principle to maintain flawless signal integrity at every level. The power amplifier section is built around an instrumentation-amplifier topology, feeding three-fold parallel push-pull power transistors in Class AB for robust, balanced drive. High-performance MOS-FET output switches and balanced remote sensing yield a damping factor of 600, ensuring tight, controlled bass and rock-steady speaker control.

Application

Ideal for discerning audiophiles, the E-3000 integrates seamlessly into high-end two-channel or home-theater systems. With both balanced XLR and single-ended RCA inputs, tone controls, and two expansion slots for optional digital or phono boards, it can serve as the centerpiece of a vinyl setup, digital front end, or hybrid system. Use it to drive bookshelf monitors or floor-standing speakers with authority and finesse.

Technology Overview

• AAVA Volume Control: Preserves signal purity by varying gain rather than attenuating, with ANCC-based noise cancellation for perfect clarity.
• Instrumentation Amplifier Stage: Provides balanced signal handling and a low-noise foundation for the power section.
• Three-Fold Parallel Push-Pull Output: MOS-FET transistors driven in Class AB deliver high current and low distortion.
• Balanced Remote Sensing: Actively monitors speaker lead conditions to maintain high damping factor and consistent performance.
• Current Feedback Topology: Ensures superior phase characteristics and linearity across the audio band.

Key Features

• AAVA precision volume control with ANCC noise-cancellation
• 100 Wpc into 8 Ω; 150 Wpc into 4 Ω; stable into 2 Ω for musical transients
• Instrumentation-amplifier-style power section
• Three-fold parallel push-pull MOS-FET output in Class AB
• High damping factor of 600 via balanced remote sensing
• Current feedback amplification for excellent phase response
• MOS-FET speaker protection switches for safety and reliability
• Front-panel tone controls (bass/treble with summing active filters)
• High-carbon cast iron insulators for vibration damping
• Two expansion slots for optional DAC or phono boards
• Oversized transformer and large filter capacitors for rock-solid power delivery

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