Accuphase DC-1000 Digital to Analogue Convertor

Accuphase DC-1000 Digital to Analogue Convertor with DSD & PCM Playback

Accuphase celebrates 50 years of manufacturing with the DC-1000, a digital processor developed to deliver the ultimate in performance and sound quality. It is equipped with the ES9038 PRO (ESS Technologies) processor: an 8MDSD (DSD signal) / 8MDS++ (PCM signal) type D/A converter that drives 8 channels in parallel to deliver almost 3 times more performance than single channel converters. Low-noise technologies refined during development of the amplifiers, like amplification of ANCC and internal signals and parallel arrangement of power circuits, allow the DC-1000 to deliver unprecedented levels of emotion.

MDSD (Multiple Double Speed DSD) Principle

DSD signals contain a large amount of quantization noise at frequencies higher than the range of human hearing, so digital filters have to be used to remove high frequency noise. Typically, DSD signals are converted into PCM signals before being input into the digital filter. The MDSD principle employed in the DC-1000, however, generates 8 phase-shifted DSD signals and then inputs them to the 8 channels in the MDS++ type D/A converter. The entire circuit then operates as a moving-average filter with completely linear phase characteristics to eliminate high frequency noise. MDSD represents a ground-breaking playback method that does not convert DSD signals into PCM signals, but instead operates as a filter that eliminates high frequency noise.

MDS++ (Multiple Delta Sigma) Converter Principle with 8 Parallel Channels

The MDS++ conversion principle is a revolutionary D/A conversion method that employs multiple delta-sigma type D/A converters connected in parallel for drastically improved performance. By passing output from the high-performance ES9038PRO (ESS Technologies) through 8 parallel converter channels, the DC-1000 provides a theoretical 2.8 (=√8) increase in overall performance for distortion, noise, linearity, and more. Because the improvements provided by the MDS++ principle are independent of signal frequency and level, output signal noise at very low levels can also be minimized, a feat that conventional delta-sigma converters find extremely difficult to achieve.

Newly Developed Dual Direct Balanced Filter

The Dual Direct Balanced Filter is comprised of 2 parallel Direct Balanced Filters with totally separate line and balanced signal paths that suppress mutual interference to deliver improved performance and sound quality.

Glass Cloth Fluorocarbon Resin Substrate

The active filter amplifiers with Dual Direct Balanced Filter circuits use glass cloth fluorocarbon resin substrate, a material renowned for its sound quality and exceptional characteristics like low dielectric constant and minimum loss.

Why Choose The Accuphase DC-1000

The Accuphase DC-1000 feels like a true 50th-anniversary statement piece - an ultra-refined DAC that blends deep technical mastery with the kind of easy, emotionally engaging presentation that makes you want to keep listening long after the music stops. At its heart is the formidable ES9038PRO working in an 8-channel parallel MDSD/MDS++ configuration, squeezing out performance that single-channel converters can only dream about, while Accuphase’s low-noise techniques and meticulous power-supply design keep the background utterly pristine. The clever MDSD architecture avoids converting DSD to PCM, instead using eight phase-shifted DSD streams to act as a beautifully linear moving-average filter, and the newly developed Dual Direct Balanced Filter maintains two completely separate signal paths for maximum purity. Add in the luxurious build - glass cloth fluorocarbon resin boards, separate toroidal transformers, thick aluminium base, and that gorgeous handcrafted wood case - and the DC-1000 delivers not just astonishing technical accuracy, but a wonderfully relaxed, deeply satisfying listening experience.