Accuphase DP-770 SACD/CD Player

Accuphase DP-770 SACD/CD Player with DSD & PCM Playback

The DP-770 is Accuphase’s highest performing single box SACD/CD player. The high-rigidity, high-precision drive traverse mechanism equipped with an outer rotor brushless DC motor drive rotates discs smoothly and delivers accurate data reading, while the 8MDSD (DSD signal) / 8MDS++ (PCM signal) type D/A converter driving the ES9028 PRO (ESS Technologies) processor in 8 parallel channels converts the inputs into highly precise analogue signals. The DP-770 also incorporates numerous noise suppression technologies like ANCC to create an unparalleled musical experience. ANCC is a technology that improves performance by using a sub-amplifier to cancel noise and distortion in the main amplifier.

Accurate Reading

Vibration countermeasures in SACD/CD players that read audio data from rapidly rotating discs greatly impact sound quality. The DP-770 uses a highly rigid 6.9 kg SACD/CD drive mounted on a 3.4 kg bottom plate to create a low centre of gravity. This prevents the housing from wobbling, while significantly reducing external vibrations from reaching the traverse mechanism. The traverse and disc loading mechanisms are assembled using elastic dampers of two different hardnesses to reduce resonance in the objective lens and actuator, thus improving reading precision.

Smooth Disc Loading

Carved from an aluminium block and then finished with a hard anodized aluminium and satin treatment, the elegant and elaborate disc tray uses high-quality dual stay bearing shafts to open and close smoothly and quietly.

Quiet Operation

The DP-770 uses an outer rotor brushless DC motor to rotate discs. The minimal vibration and operating noise of this motor create a listening environment so quiet that it almost feels like there is no rotating component at all.

MDSD (Multiple Double Speed DSD) Principle

Typical D/A converters process sound sources that use DSD signals by first converting the source to a PCM signal and then using a digital filter to remove high frequency noise. The MDSD principle employed in the DP-770, however, inputs 8 phase-shifted DSD signals into the 8 parallel 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 eliminates high frequency noise without converting DSD signals into PCM signals.

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

The D/A converter drastically improves performance with the MDS++ conversion principle by driving multiple delta-sigma type D/A converters connected in parallel. By passing output from the high-performance ES9028PRO (ESS Technologies) through 8 parallel converter channels, the DP-770 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, noise at very low levels can also be minimized, a feat that conventional delta-sigma converters find extremely difficult to achieve.

Why Choose The Accuphase DP-770

The Accuphase DP-770 feels like the kind of SACD/CD player you sit down with when you want to unwind and savour every last detail, and it backs that feeling with some very serious engineering. Its ultra-rigid, beautifully damped 6.9 kg drive and low-centre-of-gravity chassis keep vibration at bay, letting the outer-rotor brushless DC motor spin discs with an almost eerie quietness. Inside, the magic comes from Accuphase’s 8-channel MDSD/MDS++ architecture feeding the ES9028PRO, a setup that treats both DSD and PCM with exquisite care, delivering analogue output that’s astonishingly clean and refined without ever sounding clinical. Add in intelligent noise-cancelling tech like ANCC and a luxuriously smooth, satin-finished aluminium tray, and the DP-770 becomes less a player and more a wonderfully immersive listening experience wrapped in classic Accuphase craftsmanship.