Description
Accuphase E-5000 Class AB Integrated Amplifier
Flagship Power and Precision
The Accuphase E-5000 is a high-power Class AB integrated amplifier developed to commemorate Accuphase’s 50th anniversary. As the flagship model of its kind, it delivers uncompromising performance with exquisite refinement. The design embodies Accuphase’s half-century of engineering excellence, combining precision circuitry with an elegant aesthetic. Its balanced architecture from input to output ensures that every musical nuance is presented with breathtaking realism and dynamic authority.
Balanced Control and Advanced Circuitry
At the heart of the E-5000 lies Accuphase’s superior Balanced AAVA volume control, enabling perfect level matching and channel balance without signal degradation. The preamplifier section includes highly reliable logic-control signal switching relays, independent phase settings for each input, and tone controls using summing active filters for fine adjustment. Left/right balance can be adjusted through the Balanced AAVA circuit, while a convenient -20 dB attenuator allows instant volume reduction. A dedicated loudness compensator further refines tonal balance during low-level playback, preserving musical integrity at any volume.
Engineering Excellence and Connectivity
The power amplification stage employs an instrumentation amplifier design combined with a five-fold parallel push-pull output stage driven in Class AB. This ensures exceptional linearity, dynamic headroom, and stability across all frequencies. The amplifier also integrates a current feedback topology for superior phase accuracy and transient response. Connectivity options abound, with five line-level and two balanced inputs, dedicated recorder input/output, preamp and power amp connections for bi-amping, and a discrete headphone amplifier. Built with a massive power supply and protected by low-impedance MOS-FET switches, the E-5000 exemplifies precision engineering and long-term reliability.
Key Features
- Balanced AAVA volume control for precise, noise-free adjustment
- Fully balanced configuration from input to output
- Highly reliable logic-control signal switching relays
- Five line-level and two balanced inputs for versatile connectivity
- Line-level input/output for recorder integration
- Individual phase setting for each input
- Stereo signal can be switched to monophonic operation
- Left/right balance control through Balanced AAVA circuit
- Volume attenuator with instant -20 dB reduction
- Loudness compensator for enhanced low-level playback balance
- Tone controls using summing active filters
- Power amp stage with instrumentation amplifier and five-fold push-pull configuration
- Current feedback circuit for superior high-frequency performance
- Speaker protection circuit against short-circuiting
- Protection circuitry using low-impedance MOS-FET switches
- Dual massive speaker connectors for A/B or simultaneous output
- Preamp and power amp inputs/outputs for bi-amping configurations
- Discrete headphone amplifier with dedicated circuitry
- Two expansion slots for optional Accuphase boards
