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Accuphase Laboratory, Inc.

Accuphase E-4000 Integrated Amplifier

Accuphase Laboratory, Inc. Japan have requested for us not to sell their premium products on line. 

Price & Demonstration are available on request.

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The Accuphase E-4000 integrated amplifier is a succession model of E-480, the 12th generation Accuphase Class-AB high-power integrated stereo amplifier. The Preamplifier section provides a low-noise AAVA volume control with a fully refined circuit configuration and layout. The Power amplifier section adopted the bipolar transistors in a four-fold parallel push-pull arrangement and made a significant achievement for the driving ability of loudspeakers. The E4000 extracts the full potential of any loudspeaker to reproduce sound overflowing with energy and vividness.

Features

  • Revolutionary AAVA volume control
  • Four-fold parallel push-pull configuration of power transistors driven in Class AB
  • High power output of 180 watts into 8 ohms / 260 watts into 4 ohms
  • Power amplification stage configured as instrumentation amplifier
  • High damping factor of 800
  • Strong power supply with massive high-efficiency toroidal transformer
  • High-voltage, large filtering capacitors
  • Protection circuitry using MOS-FET switches

Robust power amplification stage

The power amplification stage on both the left and right sides is equipped with a large heat sink and employs four-fold parallel push-pull power transistors driven in Class AB to provide rated, high-power output of 180 watts into 8 ohms and 260 watts into 4 ohms.

High damping factor brings out the full potential of the loudspeakers

The damping factor represents the amplifier’s ability to drive the speakers. A damping factor of 800 (guaranteed) extracts the maximum potential from the loudspeakers.

Power supply circuitry designed for optimum stability

A strong power supply featuring a massive toroidal transformer and two high-voltage, large filtering capacitors (40,000 μF/80 V) offers a stable power supply at all times.

The Preamplifier section provides a low-noise AAVA volume control with a fully refined circuit configuration and layout. The Power amplifier section adopted the bipolar transistors in a four-fold parallel push-pull arrangement and made a significant achievement for the driving ability of loudspeakers. The E-4000 extracts the full potential of any loudspeaker to reproduce sound overflowing with energy and vividness.

A strong power supply with a massive, specially-made, high-efficiency toroidal transformer and 40000μF filtering capacitors are installed in the unit's center. In addition, the two power amplifier modules are kept separate for the left and right channels. The AAVA module is set at the front of the unit to avoid noise interference.

The AAVA (Accuphase Analog Vari-gain Amplifier) is a volume control principle that eliminates all variable resistors from the signal path. This AAVA volume control is Accuphase's unique technology.

The E4000's AAVA module contains six paralleled buffer amplifiers and the lower-impedance V to I converter and utilizes the ANCC, so the E-4000 achieved 20% lower noise than the E-480.

The E-4000 achieves a guaranteed damping factor of 800. It is 33% higher than the former model E-480 and has the same value as Class-A stereo power amplifier A-48.

Testimonials

Bought some Rega Kyte speakers, stands and chords from DB online and they were incredibly helpful. They updated my delivery address very quickly and recommended a longer cut of cables which they did complimentary. They also noticed I didn’t order with banana plugs so called me back to double check, which I did mean to order. When i had some issues connecting my cables and speakers, I called for some advice which they happily gave. Excellent service and next day delivery to London. Thoroughly recommend.

James F.

Probably one of the best companies in the world. They had to special order in the speakers which took a fair bit of time, which is totally understandable, but they kept in touch with me throughout the entire time with updates (even on a Sunday!!!) and once the speakers were with them, they were dispatched and arrived next day.

The entire sound system that I purchased is insanely good, but still not as good as Doug Brady HiFi!

Guy H.

I have recently purchased a HiFi package with Doug Brady and I could not be more thrilled with my experience with them.
When I walked into the store, I was made to feel welcome and was introduced to some of the products. I produces a list of specific items I was interested in and John was really helpful in showing me these items. He set the system up so I could experience it, he made some suggestions which made the package even better. Nothing seemed too much trouble for him, he was very knowledgeable about the products and gave great advice. I didn't feel pressured to buy anything, or didn't feel that he was upselling at any point. I left with an amazing package and I'd like to thank John and the team for the fantastic experience.

Kaylay L.

It’s now two weeks since I bought home my new system and I wanted to say thanks again for all your help, advice and guidance, not to mention cups of tea. I now have a system that meets all my requirements and sounds fantastic. Special thanks to Jon, who I hope is on the road to recovery from his operation and to Roger, who helped me finalise my choice. The Rega Saturn, Hegel H190V and Dali Rubicon 2 is undoubtedly the best system I have ever owned.

Bryan M