Accuphase C 2800 Brochure

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Accuphase C 2800 Brochure

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Separate unit amplifiers for left/right mounted on sturdy 8-mm aluminum chassis The C-2800 contains a total of 18 unit amplifiers, comprising modules for input buffer, AAVA circuit, balanced output, etc. These units are housed in solid enclosures made of sturdy 8-mm thick aluminum and mounted to a glass epoxy motherboard. This prevents electrical interference and guards against mechanical vibrations. Logic-controlled relays assure high sound quality and long-term reliability The strategically placed relays of the C-2800 prevent any signal degradation that could occur if the signal has to travel a long way for input and output connection and function switching. Optimum signal flow is maintained at all times. Ideal power supply uses newly developed "R-toroidal transformers" in fully monaural configuration The power supply not only serves as the energy source of an amplifier, the quality of the current supplied to the various loads also has a considerable bearing on sound quality. In the C-2800, newly developed R-toroidal transfor mers and dedicated filtering capacitors are used for each of the two stereo channels, resulting in a fully monaural construction. The R-toroidal transformer uses a core with a circular cross-section designed to reduce magnetic losses and improve efficiency. Leakage flux is virtually absent. The transformer is housed in a dual-wall enclosure with a glass fiber core and strong resin coating. Epoxy filler with superior vibration-damping characteristics is used to further isolate the transformer, resulting in highly effective triple insulation. Printed circuit boards made from Teflon with low dielectric constant and low loss The printed circuit boards for the signal-carrying circuits are made of Teflon, a glass fluorocarbon resin material. Teflon has extremely low specific inductive capacity which is desirable for fast signal transmission and a low dielectric dissipation factor which results in minimal transmission losses. High- frequency characteristics and heat resistance are also excellent. For further improved sound quality, the copper foil side is gold plated. Switchable preamplifier gain: 12/18/24 dB (standard position 18 dB) Versatile array of inputs and outputs (character label display for inputs) Dedicated headphone amplifier optimized for sound quality EXT PRE function allows use of external preamplifier Useful range of functions Provisions for recording/playback/copying with two recorders Loudness compensator augments bass and treble at low listening volume Phase selector Attenuator Subsonic filter removes ultra low frequency noise Massive cabinet of natural persimmons wood Supplied remote commander RC-32 allows volume control and input source selection