E-550 vs E-470
The E-470's power @ 8ω is 180W against the E-550's 30W, its signal-to-noise 109 dB against 98 dB, and its power @ 4ω 250W against 60W. Both share thd (0.050%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersIntegrated AmplifiersPower AmplifiersDiscontinued
About the E-550
The Accuphase E-550 is the ultimate integrated pure Class A amplifier, utilizing power MOS-FETs arranged in a triple parallel push-pull configuration driven in pure Class A operation. It incorporates innovative AAVA (Accuphase Analog Vari-gain Amplifier) volume control for superior sound quality without variable resistors, current feedback principle and MCS+ topology in the power amplifier section for excellent high-frequency phase characteristics, and logic-controlled relays for straight signal paths. The sturdy power supply includes a large 430 VA toroidal transformer and high-capacity filtering capacitors (10,000 µF × 8). Features include balanced inputs, tone controls, loudness compensation, option board slots for expansion (e.g., phono, DAC), EXT PRE for separate pre/power use, and dual speaker terminals accepting Y-lugs or banana plugs. Analog peak power meters and remote control (RC-200) are provided.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 30W @ 8Ω
- Power @ 4Ω
- 60W @ 4Ω
- Damping Factor
- >100
- Minimum Impedance
- 2Ω
- Input Sensitivity
- 0.1V RMS
- Input Impedance
- 20000Ω
Analog Output
Analog signal output specifications
- THD
- 0.050%
- SNR
- 98 dB
- Output Voltage
- 0.6V RMS
- Output Impedance
- 50Ω
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 465 × 196 × 427 mm (W × H × D)
- Weight
- 23.9 kg (53 lbs)
Key Specifications
Power: 30W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions