Cart 0

Accuphase E-650 Integrated Stereo Amplifier


E-650 Integrated Stereo Amplifier

Innovative engineering and top-grade parts and materials come together in this product featuring the superb Balanced AAVA type volume control and a triple parallel arrangement of power MOS-FETs in the output stage. The power amplifier section employs the latest instrumentation amplifier configuration for balanced signal transmission, resulting in an integrated amplifier with fully balanced configuration from the inputs right through to the output. The massive power supply and low-impedance output circuitry deliver 150 watts per channel (into 1 ohm, with music signal) and a damping factor of 800.

  • First integrated amplifier featuring Balanced AAVA volume control
  • Pure Class A operation(30 watts into 8 ohms)
  • Guaranteed linear power: 120 watts into 2 ohms, 60 watts into 4 ohms,30 watts into 8 ohms
  • Output stage with power MOS-FETs in triple parallel push-pull configuration
  • Instrumentation amplifier principle in power amplifier for fully balanced signal transmission, complemented by MCS+ topology and current feedback amplification circuitry
  • Strong power supply with massive high-efficiency transformer and large filtering capacitors
  • Preamplifier and power amplifier sections can be used separately
  • Numeric indication of volume level

    Download the Brochure here.

    Download the Fact Sheet here.


    Rated Continuous Average Output Power (both channels operation simultaneously, 20-20000Hz)

    Note: * 1-ohm operation possible with music signals only. 

    150 W/ch 1-ohm load *
    120 W/ch 2-ohm load 
    60 W/ch 4-ohm load 
    30 W/ch 8-ohm load 
    Total Harmonic Distortion (both channels operating simultaneously, 20-20000Hz)
    0.05% 2-ohm load 
    0.03% 4 to 16 ohm load
     Intermodulation Distortion 0.01%
    Frequency Response


    At rated continuous average output: 20 - 20,000 Hz +0, –0.5 dB

    MAIN IN At rated continuous average output: 20 - 20,000 Hz +0, –0.2 dB

    At 1 watt output: 3 - 150,000 Hz +0, –3.0 dB

    Damping Factor 800 (with 8-ohm load, 50 Hz)
    Input Sensitivity and impedance

    Input sensitivity

    For rated output  For 1 Watt output (EIA)
    Input impedance
    HIGH LEVEL INPUT 14.2mV 20 kilohms
    BALANCED INPUT 14.2mV 40 kilohms
    MAIN IN LINE 113mV 20 kilohms
    MAIN IN BAL 113mV  40 kilohms
    Output voltage Impedance PRE OUTPUT 0.617 V 50 ohms (at rated continuous average output)


    MAIN IN → OUTPUT: 28 dB

    Tone Controls

    Turnover frequency and adjustment range

    BASS: 300 Hz ±10 dB (50 Hz)

    TREBLE: 3 kHz ±10 dB (20 kHz)

    Loudness compensator +6dB (100Hz)
    Attenuator -20dB

    S/N Ratio,

    Input-converted Noise


    S/N ratio at rated output

    (A-weighted, with input shorted)

    S/N ratio (EIA)
    MAIN IN 117dB  101dB
    Bar graph meter Represents output voltage value (dB) using 26 points With meter on/off switching function
    Output Load Impedance 2 to 16 ohms
    Stereo Headphones Suitable impedance: 8 ohms or higher
    Power Requirements 120 V/220 V/230 V AC, 50/60 Hz (Voltage as indicated on rear panel)
    Power Consumption

    168W idle

    290W in accordance with IEC 60065

    Maximum Dimensions

    Width 465 mm ( 18.31")

    Height 191 mm ( 7.52")a


     25.3 kg (55.8 lbs) net

    32.0 kg (70.6 lbs) in shipping cart

    Sometimes we want to listen to our brand new audio setup without having to worry about dragging B&W up two flights of stairs - that's where we come in! Not only are our team experts in high quality AV equipment, they're also professional bodybuilders* who can deliver and install your new toys quickly and efficiently.

    Our in-house team can service those in Brisbane, the Gold Coast, and the Sunshine Coast. Give us a call to get an obligation-free quote today!

    *the term 'professional bodybuilders' is used here loosely...