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E-650 Integrated Stereo Amplifier

Vendor: Accuphase
E-650 Integrated Stereo Amplifier - Trimira
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





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)



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...

Our refund policy operates in a 30-day window - after this time we are unable to accept the product and cannot issue a refund. Don't worry, our products are hand picked from thousands of luxury brands to ensure you are only offered the best of the best so we doubt you'll need to consider this policy at all. If you are concerned about making the wrong decision when it comes to your purchase, please feel free to talk with our team of experts who can advise you on equipment based on your personal music taste, aesthetics, and the layout of your listening room. Still not convinced? Discuss the possibility of a loan (trial period) with our experts and hear the difference yourself.

Our refund policy can be viewed here.

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