Description
Accuphase E-700 Class A Integrated Amplifier
Evolution of a Modern Classic
The Accuphase E-700 represents the next evolution of integrated amplifier design, incorporating many of the innovations developed for the 50th Anniversary flagship E-800. With a fully balanced configuration from input to output, it achieves remarkable sonic precision and depth. Its refined engineering allows for effortless musical expression, delivering the full emotion and energy of live performances in your listening space.
Precision Control and Class A Purity
At the heart of the E-700 lies Accuphase’s Balanced AAVA volume control with ANCC (Accuphase Noise and distortion Cancelling Circuit), ensuring flawless signal transmission and perfectly linear volume adjustment. The preamplifier section maintains complete balance and noise immunity, while the power amplification stage is configured as an instrumentation amplifier for superior signal integrity. The result is a sound that is detailed, dynamic, and free from coloration.
Power, Stability, and Engineering Refinement
The E-700’s Class A power stage employs a four-fold parallel push-pull configuration using power MOS-FETs, producing 35 watts into 8 ohms, 70 watts into 4 ohms, and 140 watts into 2 ohms—with up to 160 watts into a 1-ohm load during musical peaks. A high damping factor of 1,000 ensures absolute control over loudspeakers. A robust power supply featuring a high-efficiency toroidal transformer and large filtering capacitors provides the foundation for deep, stable, and musical performance, while MOS-FET-based protection circuitry ensures reliable operation under all conditions.
Key Features
- Integrated amplifier with fully balanced configuration from input to output
- Balanced AAVA type volume control with ANCC technology
- High-accuracy, high-rigidity volume sensor construction
- Power amplification stage configured as an instrumentation amplifier
- Four-fold parallel push-pull configuration using power MOS-FETs in Class A operation
- Linear power output: 35W into 8Ω, 70W into 4Ω, 140W into 2Ω
- Peak power output of 160W into 1Ω (music signals)
- High damping factor of 1,000 for superior speaker control
- Massive toroidal transformer and large filtering capacitors
- Protection circuitry using MOS-FET switches
