Accuphase DP-55

MMB tpe D/A converter achieves 20-bit linearity and minimaizes noise
- Two sets of digital inputs/outputs
- Jitter-free high-performance digital demodulator
- Fully digital control of CD mechanism
- Balanced drive circuitry for servo motors

Single-enclosure CD player with ultra-precise MMB D/A converter allows independent use of high-performance processor section with superb sound. Digital inputs/outputs allow coaxial and optical connections. Fully digital control of CD mechanism achieves optimization of servo parameters in real time. Noise-free analog output with totally balanced configuration.

The DP-55 represents another breakthrough in the evolution of the integrated-type CD player. While incorporating a wealth of sophisticated Accuphase technology originally developed for top-of-the-line separate-type CD players, the DP-55 is an amazingly affordable single-enclosure model that can also serve as a digital processor.
The processor section uses the MMB principle to achieve outstanding conversion precision. Three specially selected 20-bit D/A converters are operating in parallel, resulting in excellent linearity, mini-mum THD, wide dynamic range, and impeccable signal-to-noise ratio. Since the DP-55 provides access to the internal converter via a set of digital inputs, its top-level sound quality and performance potential can be tapped also by external components capable of supplying a digital signal. What's more, the also provides a set of digital outputs, allowing connection of digital recorders such as DAT or MD units, for direct digital recording of supreme quality.

Digital Input
The CD transport section uses fully digital circuitry for control of all actuators and mechanical functions. This allows optimization of servo parameters for each individual disc as it is being played, resulting in stable operation and a drastic reduction of read-out errors. The laser pickup is an ultra-compact type with integrated RF amplifier, and all actuators are driven by balanced circuits which do not conduct any current to the ground line. A tray lock feature firmly secures the tray during playback, and the entire CD mechanism is mounted on a metal chassis of high rigidity, designed to minimize any vibrations that may arise during playback. In this way, the DP-55 covers every electrical as well as mechanical aspect to assure highly precise readout of the digital signal. A digital level control and balanced output circuitry are further advantages for optimum sound.

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