A Versatile and Powerful Integrated AmplifierThe Accuphase E-280 is a versatile and powerful integrated amplifier designed to deliver exceptional performance in a compact form factor. This amplifier is ideal for those who demand high-quality sound without sacrificing convenience.Featuring a fully balanced Class-A amplifier circuit, the E-280 ensures pristine audio reproduction with minimal distortion. The amplifier's power supply is meticulously designed to provide clean, stable energy, even during demanding listening sessions.AAVA volume control with further lowered noise floorThe E-280 comes with a dedicated headphone amplifier optimized for sound quality so there is no need of a separate dedicated headphone amplifier, and an EXT PRE button allows separate use of preamplifier and power amplifier sections. The front panel features Numeric indication of volume level with new LED lighting in the Analog meters for improved legibility.The volume control in the preamplifier section is a crucial component with a decisive influence on performance and sound quality. AAVA is a revolutionary type of completely analog volume control that completely does away with any variable resistors in the signal path. This ensures that the signal remains perfectly unaltered, free from the adverse effects of impedance changes. As a result, both S/N ratio and sound quality are excellent at any volume setting.Highly efficient power supply with large transformer and large-capacity filter.The E-280 uses a massive power transformer with high output capability. Highly effective filtering is via two custom-made aluminum electrolytic capacitors, each with a vastly increased 30,000 μF rating.Powerful AmplificationParallel push-pull output stage and power amplifier stage mounted on large heat sink. Two identical units are arranged on the left and right sides of the chassis. Power amp units use high-power transistors in a robust parallel push-pull configuration, producing ample output of 120 watts into 4 ohms or 90 watts into 8 ohms per channel.SpecificationsContinuous Average Output Power (both channels driven, 20-20,000 Hz): 120 watts per channel into 4 ohms, 105 watts per channel into 6 ohms, 90 watts per channel into 8 ohmsTotal Harmonic Distortion (both channels driven, 20-20,000 Hz): 0.05% with 4 to 16-ohm loadIntermodulation Distortion: 0.01%Frequency Response: HIGH LEVEL INPUT/POWER INPUT 20 - 20,000 Hz +0, -0.5 dB (for rated continuous average output), 3 - 150,000 Hz +0, -3.0 dB (for 1 watt output)Damping Factor: 500 (For rated output with 8-ohm load, 50 Hz)Output Voltage, Output Impedance (at rated continuous average output): PRE OUTPUT: 1.07 V, 50 ohmsGain: HIGH LEVEL INPUT → PRE OUTPUT: 18 dB, POWER INPUT → OUTPUT: 28 dBTone Controls Turnover frequency and adjustment range: BASS: 300 Hz ±10 dB (50 Hz), TREBLE: 3 kHz ±10 dB (20 kHz)Loudness Compensation: +6 dB (100 Hz)Attenuator: -20 dBPower Level Meters: Logarithmic compression, peak reading meters, output dB and % scaleLoad Impedance: 4 - 16 ohmsStereo Headphones: Suitable impedance: 8 ohms or higherPower Requirements: AC 230 V 50 Hz (Voltage as indicated on rear panel)Power Consumption: 46 watts idle, 245 watts in accordance with IEC 60065Maximum Dimensions: Width 465 mm x Height 151 mm x Depth 420 mmMass: 20.0 kg net, 26.0 kg in shipping carton
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