Accuphase E-280

Accuphase's entry-level integrated amplifier with high-resolution solid-state performance and modular expandability

Overview

The Accuphase E-280 is a 2-channel integrated stereo amplifier designed and manufactured by Accuphase, a small private company from Japan. It succeeds the E-270 and is part of a product lineup that includes the E-270, E-380, E-480, and E-650. Described as the brand’s entry-level amplifier, the E-280 offers a refined balance of precision and smoothness, with a sound signature characterized as lush and warm yet open and detailed. It features a headphone amplifier section and supports bi-amping. The amplifier is built with a solid chassis and meticulous internal layout, contributing to superior sound fidelity and long listening sessions without fatigue.

Specifications

Product Dimensions	5.94"h x 18.31"w x 16.54"d
Rated power	90 watts into 8 ohms
Rated power	120 watts into 4 ohms
Power Output (Stable to)	1 ohm
Damping factor	500
Frequency Response	20 Hz - 20,000 Hz
Total Harmonic Distortion	0.05%
Signal to Noise Ratio (dB)	Line 107, Main 122, Balanced 96
Amplifier Class	Class AB
Channels	2
Analog Inputs	5 (Line)
XLR Inputs	1
Analog Outputs	2 (Preamp)
XLR Outputs	1
Headset Jack	Yes
DAC	No, Optional DAC-60 Module
Voltage	120/220/230
Power Consumption (Watts)	249
Product Weight (lbs.)	45
Warranty	3 Years
Color/Finish Name	Beige

Design

The E-280 uses a Class AB design with bipolar transistors in a double parallel push-pull configuration and employs current feedback amplification topology in the power stage, based on the instrumentation amplifier principle. It features Accuphase’s AAVA volume control, logic-control relays for minimal signal path, and a low-impedance output circuit. The power supply includes a massive high-efficiency transformer and large filtering capacitors. Protection circuitry uses MOS-FET switches, and the amplifier includes two rear-panel expansion slots compatible with previous option boards, including the optional DAC-60. The aluminum remote control and subtle foam feet contribute to its refined, durable design. Despite high output, it remains cool during extended use and exudes top-notch build quality.

Context

The E-280 is positioned as Accuphase’s entry-level integrated amplifier, succeeding the E-270 in a lineage that traces back to the 1973 E-202, the company’s first integrated model. While offering a more relaxed midrange than its predecessor, it delivers greater transparency, precision, and bass articulation. It competes in a category described alongside high-end brands like McIntosh, Luxman, and Boulder, offering refinement previously reserved for higher-tier models. Accuphase, founded in 1972 by former Kenwood engineer Jiro Kasuga, began as Kensonic, producing early models like the P-300 amplifier and C-200 preamp.

Market

The E-280 has a claimed failure rate of around 0.03%, and the chief engineer personally handles repairs. Originally priced at $6,995, it currently sells for $4,067.66 in the secondary market. It performs best with speakers of 4 ohm or higher impedance and 88+ dB sensitivity, though it may enter protection mode with very demanding loads.