Accuphase E-550

The ultimate integrated pure class A amplifier - Power MOS-FETs arranged in triple parallel push-pull configuration. Innovative AAVA volume control. Strong power supply with large toroidal transformer and high filtering capacity supports linear output progression of 120 watts/ch into 2 ohms, 60 watts/ch into 4 ohms, or 30 watts/ch into 8 ohms. Power amp section uses current feedback for optimum high-frequency phase characteristics and MCS+ topology.

Revolutionary AAVA volume control
Power MOS-FETs in triple parallel push-pull configuration driven in pure class A
Current feedback principle and MCS+ topology in power amplifier section
Logic-control relays for straight and short signal paths
Tone control circuits
Strong power supply with large transformer
Option board slots provide capability for digital signal input and analog record playback

Previous Next

Klik op de afbeelding voor een vergroting
Click picture for magnification

Power output: 30 watts per channel into 8 ohm (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.02%
Damping factor: 140
Input sensitivity: 77.7mV (line)
Signal to noise ratio: 98dB (line)
Output: 0.617V (Pre out)
Speaker load impedance: 2 to 16 ohm
Digital inputs: optional coaxial, optical
Dimensions: 465 x 196 x 427mm
Weight: 23.9kg

See also link.