Introduction - Cambridge Audio Azur DacMagic Plus User Manual

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Cambridge Audio
Introduction
Thank you for purchasing this Cambridge Audio DacMagic Plus Upsampling Digital to Analogue
Converter. We are confident that you will enjoy many years of listening pleasure from it. Like all
Cambridge Audio products, the DacMagic Plus adheres to our three core principles - stunning
performance, ease of use and incredible value
The DacMagic Plus features ATF2™ (2nd Adaptive Time Filtering), an up-sampling process developed
in conjunction with Anagram Technologies of Switzerland to intelligently interpolate incoming audio
data to 24-biV384kHz through the use of a 32-bit Analog Devices DSP (Digital Signal Processor).
The ATF2 system applies sophisticated polynomial curve-fitting interpolation and incorporates a
time domain model which adaptively generates the new data in the temporal domain, dramatically
reducing digital jitter.
Our latest version of this algorithm now supports noise shaped data scrambling for enhanced
linearity with 24-bit content.
As with our high-end CD players, our proprietary Dual Differential Virtual Earth Balanced filter
topology is used, configured as a low-order two pole linear-phase Bessel filter to take advantage of
the high sampling rate achieved. Two very high quality Wolfson WM8740 24-bit DAC ICs are used
in dual differential mode. Since each channel has its own DAC to process information, completely
separate and symmetrical analogue filter circuitry can be implemented. These allow both left- and
right-channel circuitry to operate identically, ensuring the DacMagic Plus delivers fantastic sound-
staging and stereo-imaging properties.
Two digital inputs are fitted (both featuring S/P DIF and TOSLINK) and allow a wide range of digital
sources to be connected. In addition, a USB input enables the DacMagic Plus to be connected to a
PC and act as a very high quality DAC/Soundcard, offering genuine HiFi-quality playback from your
desktop, media PC, etc. A digital output is fitted which passes through the selected digital source for
recording purposes (no up-sampling performed).
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