We start our Accuphase journey with the E-380 integrated amplifier. This Class AB amplifier packs plenty of punch at 120W per channel – enough to drive most loudspeakers with ease. It’s a refined sound, with pace and rhythm to lure you in and keep playing music ’til the small hours. Like all Accuphase integrated amplifiers, the E-650 has two modular slots for optional DAC and phono boards to be added (sold separately).

Please get in touch for pricing information.

In-store purchase only, please call 0141 221 0221 or email glasgow@loud-clear.co.uk to reserve/enquire.

The E-380 realizes a 20% increase in rated output power over the previous model, thanks to a reinforced power amplification stage and power supply. The further evolved AAVA volume control system allows music enjoyment at any level without even the slightest degradation of signal quality. The power amplifier section utilizes the instrumentation amplifier principle to achieve outstanding S/N ratio. Low impedance design of the output circuitry results in a damping factor of 500, ensuring that the potential of every speaker can be brought out to the fullest. Enjoy a musical performance of amazing transparency and dynamism.

  • AAVA volume control
  • Power amplification stage with bipolar transistors in double parallel push-pull configuration
  • Rated for 180 watts into 4 ohms and 120 watts into 8 ohms in Class AB
  • High damping factor of 500
  • Power amplification stage configured as instrumentation amplifier
  • Current feedback amplification topology in power amplification stage
  • Logic-control relays for shortest signal paths
  • Strong power supply with massive high-efficiency transformer and large filtering capacitors
  • Protection circuitry using MOS-FET switches
Accuphase E-380 integrated amplifier front dem room

Balanced AAVA type volume control
AAVA is a revolutionary type of volume control that completely does away with any variable resistors in the signal path, using instead a combination of 16 V-I converter amplifiers with different gain. Unlike in conventional volume controls, the music signal is not being attenuated by a rotary resistor, so that optimum S/N ratio and low distortion can be maintained over the entire volume range. The signal degradation and impedance changes of older designs are now a thing of the past. The E-380 uses four maximum-gain V-I converter amplifiers, followed by two amplifier circuits in parallel configuration, which doubles the total output current capability and halves the circuit impedance to further reduce noise. AAVA features:

  • Purely analog principle avoids the inherent noise of digital circuitry
  • Excellent S/N ratio at any volume level position
  • No change in sound quality over the entire range
  • Finely graded volume adjustment steps
  • No volume differences between left and right channel
  • High channel separation
  • Left/right balance adjustment and attenuation also realized with AAVA

Power amplification
Bipolar resistors – The power amplification stage features bipolar transistors in a double parallel push-pull configuration.

25% improved damping factor – Balanced Remote Sensing and MOS-FET switches result in a damping factor of 500, representing a 25% improvement over the predecessor model.

Power supply circuitry designed for optimum stability – The large transformer and massive 33,000 μF filtering capacitors with 10% more capacitance provide rock-stable high-quality power.

20% more rated output power – Two power amplifier units for left and right mounted directly to large heat sinks deliver ample power, rated for 120 watts into 8 ohms or 180 watts into 4 ohms.

Accuphase E-380 integrated amplifier

Advanced features

  • Logic-control signal switching relays for shortest signal paths
  • Five line level and two balanced inputs
  • Line input and output connectors for a recorder
  • Individual phase setting for each input
  • Stereo signal can be switched to monophonic operation
  • Left/right balance control also realized with AAVA
  • Convenient attenuator is useful for example when operating an analogue record player
  • Loudness compensator enhances low end presence
  • Tone controls using summing active filters
  • Power amplification stage employs instrumentation amplifier principle
  • Current feedback amplification circuit topology assures excellent phase characteristics in high range
  • Speaker output protection circuit guards against short-circuiting
  • Protection circuitry using MOS-FET switches
  • Two sets of large speaker terminals
  • Preamplifier and power amplifier sections can be used separately
  • Preamplifier outputs also support bi-amping connection
  • Power amplifier inputs allow use of that section only
  • Dedicated headphone amplifier designed for optimum sound quality
  • Two rear panel expansion slots allow use of option boards
  • DAC input selector button for use when digital input board (DAC-40 or DAC-50) is installed
  • Numeric indication of digital signal sampling frequency (when DAC-40 or DAC-50 is installed)
  • High-sensitivity analogue peak power meters
  • Supplied Remote Commander RC-230 – allows volume adjustment, input source switching etc

Option Boards
Rear panel expansion slots allow use of three types of option boards (DAC-50, AD-50, LINE-10). Up to two boards can be inserted, according to requirements.

Analog Disc Input Board AD-50 features a high-performance phono equalizer for playback of analogue records.

  • Supports MC and MM cartridges
  • Load impedance selector button (for MC only)
  • Subsonic filter