Discovering the AccuPhase Laboratory: A Closer Look at Their Range of Amplifiers, including E-800, E-650, E-380, E-280, E-4000, and E-5000

AccuPhase is a Japanese company that specializes in the design and manufacture of high-end audio equipment, including amplifiers, preamplifiers, and digital signal processors. Their products are known for their exceptional sound quality, reliability, and elegant design.


One of the key features of AccuPhase's amplifiers is their proprietary AAVA volume control technology. AAVA stands for Accuphase Analog Vari-gain Amplifier, and it is a unique circuit design that uses a series of stepped attenuators to control volume levels. The AAVA circuitry ensures that the volume control operates with high precision and minimal distortion, resulting in a clean, transparent sound that is faithful to the original recording.

AccuPhase offers a range of amplifiers to suit different budgets and requirements. Let's take a closer look at some of their most popular models:

1. E-800: This is AccuPhase's flagship amplifier, and it is designed for the most demanding audiophiles. The E-800 delivers a whopping 50 watts of power per channel into 8 ohms, and it can drive even the most demanding speakers with ease. The E-800 features a fully balanced circuit design, with separate power supplies for each channel, and it uses high-quality components throughout.
2. E-650: The E-650 is a slightly more affordable option that still delivers exceptional performance. It delivers 30 watts of power per channel into 8 ohms, and it features a fully balanced circuit design and AccuPhase's proprietary AAVA volume control. The E-650 is a great choice for those who want top-notch performance without breaking the bank.
3. E-380: The E-380 is a stereo amplifier that delivers 120 watts of power per channel into 1 ohm. It features a high-current power supply and AccuPhase's AAVA volume control, as well as a range of other advanced circuitry. The E-380 is a great choice for those who want a powerful and versatile amplifier that can drive a wide range of speakers.
4. E-280: The E-280 is a more compact amplifier that still delivers exceptional performance. It delivers 120 watts of power per channel into 1 ohm, and it features a high-current power supply and AccuPhase's AAVA volume control. The E-280 is a great choice for those who want a high-performance amplifier that won't take up too much space.
5. E-4000: The E-4000 is a four-channel amplifier that delivers 100 watts per channel into 8 ohms. It features a fully balanced circuit design and AccuPhase's AAVA volume control, as well as a range of other advanced features. The E-4000 is a great choice for those who want to drive multiple speakers in a home theater or multi-room audio setup.
6. E-5000: The E-5000 is a five-channel amplifier that delivers 150 watts per channel into 8 ohms. It features a fully balanced circuit design and AccuPhase's AAVA volume control, as well as a range of other advanced features. The E-5000 is a great choice for those who want to drive multiple speakers in a home theater setup.

Accuphase E-4000

AccuPhase's E-4000 and E-5000 amplifiers are two of the company's most impressive offerings, and they are designed to deliver exceptional performance in multi-channel audio setups. Here are some of the key features and audiophile technology that you can expect from these amplifiers:

• Fully Balanced Circuit Design: Both the E-4000 and E-5000 feature a fully balanced circuit design, which helps to reduce noise and distortion and improve overall sound quality. The amplifiers use separate power supplies for each channel, which further improves performance.
• AAVA Volume Control: AccuPhase's proprietary AAVA volume control technology is present in both the E-4000 and E-5000 amplifiers. This technology uses a series of stepped attenuators to control volume levels with high precision and minimal distortion, resulting in a clean, transparent sound that is faithful to the original recording.
• MOS-FET Power Amplifier: The E-4000 and E-5000 both use MOS-FET power amplifier technology, which provides high output power with minimal distortion. The amplifiers are capable of delivering 100 watts per channel (E-4000) and 150 watts per channel (E-5000) into 8 ohms.
• Multiple Input Options: Both amplifiers offer multiple input options, including RCA, XLR, and balanced XLR connections. This makes it easy to connect a variety of audio sources, including CD players, streaming devices, and more.
• Advanced Protection Circuitry: The E-4000 and E-5000 both feature advanced protection circuitry, which helps to prevent damage to the amplifiers and connected speakers. The protection circuitry includes overcurrent protection, DC protection, and thermal protection.
• Elegant Design: As with all AccuPhase products, the E-4000 and E-5000 amplifiers are designed to be both functional and visually appealing. The amplifiers feature a sleek, minimalist design with high-quality components and attention to detail.

Overall, the AccuPhase E-4000 and E-5000 amplifiers are excellent choices for anyone who wants to create a high-performance multi-channel audio system. These amplifiers deliver exceptional sound quality and are built to last, making them a great investment for serious audiophiles. 

In conclusion, AccuPhase is a company that is committed to delivering exceptional audio performance through their range of amplifiers. Whether you are a serious audiophile or just someone who appreciates great sound quality, there is an AccuPhase amplifier that will suit your needs.