E-800 Integrated Amplifier

The E-800 is positioned above the E-650 as the new flagship model in the integrated amplifier line up of Accuphase. The preamplifier section features the impeccable Balanced AAVA type volume control, while the power amplifier section is configured as an instrumentation amplifier using a six-fold parallel push-pull configuration of power MOS-FETs driven in pure Class A.

The resulting quality is on a par with high-class separate type amplifiers. Operating as a simple and smart system, the E-800 realizes acoustic excellence that reaches to the very heart of the music.

• Integrated amplifier with fully balanced configuration extending from input to output
• Balanced AAVA type volume control
• Power amplification stage configured as instrumentation amplifier
• Six-fold parallel push-pull configuration of power MOS-FETs driven in Class A
• Linear power progression of 50 watts into 8 ohms, 100 watts into 4 ohms, and 200 watts into 2 ohms
• 300 W output into 1-ohm load (music signals)
• High damping factor of 1000
• Strong power supply with massive high-efficiency toroidal transformer and large filtering capacitors
• Protection circuitry using MOS-FET switches

Ultra-Massive Pure Class-A Precision Integrated Stereo Amplifier
Combining cutting-edge technology with carefully selected materials of superb quality, the E-800 exudes an aura of solid luxury, with a lavish champagne gold front panel that changes its look depending on the viewing angle, and bar graph meters that delicately reflect the rhythm of the music.

Balanced AAVA type volume control
AAVA performs volume adjustment by making use of a combination of 16 current signals with different magnitude, thereby eliminating signal degradation and impedance fluctuations and maintaining high S/N ratio and low THD over the entire volume range. In the Balanced AAVA implementation of the E-800, two AAVA circuits are driven in a fully balanced configuration with a superior capability to eliminate external noise.

High-accuracy, high-rigidity volume sensor construction
The volume sensor mechanism developed by Accuphase in-house is built from a single massive aluminium block extruded and finished with utmost precision and complemented by other substantial materials, to ensure a silky smooth operation feel.

Formidable power amplification stage
The power amplification circuitry mounted directly on a large heat sink employs a six-fold parallel push-pull configuration of power MOS-FETs driven in Class A. Two identical units arranged on the left and right sides of the chassis deliver impeccable power in a linear progression for the two channels: 50 watts into 8 ohms, 100 watts into 4 ohms, and 200 watts into 2 ohms. The amplifier can even supply 300 watts into 1 ohm (music signals).

High damping factor brings out the full musical potential of loudspeakers
Features such as Balanced Remote Sensing and MOS-FET switches help to realize a damping factor of 1000. Superb motion control lets every loudspeaker perform at its very best.

Power supply circuitry designed for optimum stability
The strong power supply with massive high-efficiency toroidal transformer and
two large 60,000 μF filtering capacitors ensures a stable current supply at all times.

Advanced features

• Logic-control signal switching relays for shortest signal paths
• Five line level and three balanced inputs
• Line input and output connectors for a recorder
• Individual phase setting for each input
• Stereo signal can be switched to monophonic operation
• Left/right balance control also realized with Balanced AAVA
• Convenient attenuator is useful for example when operating an analogue record player or taking a telephone call
• Loudness compensator enhances low end presence at low volume levels
• Tone controls using summing active filters
• Power amplification stage employs instrumentation amplifier principle
• Current feedback amplification circuit topology assures excellent phase characteristics in high range
• Speaker output protection circuit guards against short-circuiting
• Protection circuitry using MOS-FET switches
• Two sets of large speaker terminals
• Preamplifier and power amplifier sections can be used separately
• Line level and balanced outputs of preamplifier section also support bi-amping connection
• Line level and balanced inputs of power section enable use as a power amplifier
• Dedicated headphone amplifier constructed with discrete components
• Two rear panel expansion slots allow use of option boards
• DAC input selector button for use with digital input board (when DAC-40 / DAC-50 is installed)
• Sampling frequency display for digital input signal (when DAC-40 / DAC-50 is installed)
• High-sensitivity LED bar graph power meters with 30-point indication to -50 dB
• Supplied Remote Commander RC-240 allows volume adjustment, input source switching etc.

Option Boards
Rear panel expansion slots allow use of three types of option boards (DAC-50, AD-50, LINE-10). Up to two boards can be inserted, according to requirements.

Analog Disc Input Board AD-50 features a high-performance phono equalizer for playback of analogue records.

• Supports MC and MM cartridges
• Load impedance selector button (for MC only)
• Subsonic filter