E-280 is an integrated stereo amplifier that is equipped with ``AAVA volume control'' and achieves a high signal-to-noise ratio and low distortion rate. The power amplifier section uses a parallel push-pull configuration of high-power transistors, a powerful power supply section, and a low impedance output circuit to achieve high quality power of 120W/ch (4Ω). Furthermore, a current feedback amplifier circuit with excellent high-frequency phase characteristics is used, and the signal path is balanced using an instrumentation amplifier. We achieved a damping factor of 500, which affects speaker behavior, by reviewing the pattern and wiring between the power amplifier and speaker output terminals to lower output impedance. Achieved a contactless protection circuit using a power MOSFET switch. It is now possible to add two new option boards, achieving expandability equivalent to higher-end models. Pursuing the performance and sound quality of separate amplifiers to the utmost, we are opening up a new stage that surpasses its class.
-Equipped with Accuphase's unique "AAVA volume control"
●Rated output 90W/8Ω, 120W/4Ω
●“Bipolar transistor” 2 parallel push-pull power amplification stage
●Powerful power supply section with large high-efficiency power transformer and large-capacity filter capacitor
●Power amplifier section of instrumentation amplifier configuration
●Uses a current feedback amplification circuit in the power amplifier section
●Logic relay control signal switching method
●“MOSFET switch” adopted for protection circuit
●“Damping factor” has been improved by 25% compared to E-270, reaching 500.
●Equipped with an option slot that allows you to insert two option boards.
spec
●Effective output｜120W+120W (4Ω), 90W+90W (8Ω)
●Total harmonic distortion rate｜0.05%
●Frequency characteristics | 20Hz to 20,000Hz 0 -0.5dB, 3Hz to 150,000Hz 0 -3.0dB
●Damping factor｜500 (8Ω 50Hz)
●Tone control｜BASS: 300Hz±10dB, TREBLE: 3kHz±10dB ●S/N ratio｜LINE: 98dB, BALANCE: 97dB
●Power consumption｜249W
●Power supply｜AC100V 50/60Hz
●External dimensions | W465mm x H151mm x D420mm
●Weight｜20.4kg