Accuphase E-800S Integrated Amplifier with 50 Watts into 8ohms The flagship E-800S incorporates the full breadth of Accuphase's accumulated knowledge on integrated amplifiers. The preamplifier section incorporates a Balanced AAVA type volume control, while the power amp stage relies on an instrumentation amplifier principle and six-fold parallel push-pull configuration using power MOS-FETs driven in Class A, driving any loudspeakers to higher dimensions of sound. Enjoy the blissful acoustic space provided during playback with the E-800S. Balanced AAVA Type Volume Control Circuit Conventional preamplifiers use variable resistors to adjust volume, which causes contacts to deteriorate and create grit as well as increase noise at normal volume levels. AAVA, however, produces multiple, widely varying signals from the input signal and controls volume by changing the combination of those signals. This achieves minimum noise levels at all volume levels without any grit. The E-800S relies on Balanced AAVA comprised of balanced AAVA circuits, reducing the overall noise level by 10% compared to conventional models at typical volume positions. ANCC (Accuphase Noise and distortion Cancelling Circuit) The E-800S’s I-V conversion amplifier uses the ANCC principle. ANCC uses a secondary amplifier to cancel out noise and distortion from the main amplifier. The secondary amplifier utilizes a low-noise amplifier (noise density: 1.5 nV/√Hz) to increase the effect of the ANCC. Incorporating this ANCC in the AAVA I-V conversion amplifier drastically improves noise performance, particularly when transitioning from low volume settings to typical volume positions. High-Accuracy, High-Rigidity Volume Sensor Construction The volume sensor mechanism carved from a single aluminium block ensures silky-smooth operation, a weighty operational feel, and accurate position detection. Operations with the remote commander are so quiet that mechanical noise is hardly noticeable. Power Amplification Stage Configured as an Instrumentation Amplifier The instrumentation amplifier circuitry’s equal impedance on the + and – sides and exceptional external noise suppression provide optimal performance for an audio amplifier. Power Amplification Stage that Achieves Linear Output The power amplification stage on both the left and right sides features a large heat sink and employs six-fold parallel push-pull power transistors driven in Class A to provide linear power output of 50 Watts into 8 Ohms, 100 Watts into 4 Ohms, and 200 Watts into 2 Ohms. Power Supply Circuitry Delivers Steady Power A strong power supply featuring a massive toroidal transformer and two high-voltage, large filtering capacitors (63,000 μF/63 V) offer a stable power supply at all times. High Damping Factor Brings Out the Full Potential of Speakers The damping factor represents the amplifier’s ability to drive the speakers. A damping factor of 1,000 (guaranteed) extracts the maximum potential from the loudspeakers. Why Choose The Accuphase E-800S Amplifier? The Accuphase E-800S is the kind of integrated amplifier that quietly redefines what flagship performance really means. Drawing on decades of Accuphase expertise, it blends technical brilliance with refined musicality, offering a sound that’s effortlessly rich and deeply immersive. Its Balanced AAVA volume control delivers whisper-quiet, grit-free precision at every level, while the ANCC circuit works behind the scenes to cancel noise and distortion with remarkable finesse. Built like a precision instrument, the E-800S seems carved from solid, giving its controls a satisfyingly smooth, weighty feel. Under the hood, the Class A power stage - driven by a six-fold parallel push-pull MOS-FET setup - offers sublime, linear output that can drive just about any speaker with grace and authority. With a damping factor of 1,000 and a monster power supply, the E-800S doesn't just play music - it sculpts a soundstage that feels almost otherworldly.
