Proceed DAP (non-CE) - Manual (Page 8)

8
Special Design Features
Congratulations on your purchase of the Proceed DAP. The Madrigal design team
is confident you will enjoy the outstanding performance of the DAP for many
years. In case you are interested in technical details, what follows is a brief out-
line of some of the key technologies in your new processor.
Superior isolation
between sources
One of the advantages of a separate digital audio processor is that you can take
the money which might have otherwise been spent on several built-in D/A con-
verters and put it into one, superior processor which will enhance the perfor-
mance of all the transports with which it is used. Ironically, many outboard pro-
cessors fail to live up to this potential due to interference between their various
digital inputs.
The DAP provides outstanding isolation between its inputs, realizing the full po-
tential of the various digital transports with which it is used. In fact, all unse-
lected digital inputs are capacitively shunted to ground upon entering the DAP to
prevent their interaction with any portion of the circuitry inside the processor. As
a result, the selected input effectively has the DAP “all to itself” for its conversion
to analog.
Fully balanced design The DAP is fully balanced in both the analog and digital domains. Even single-
ended digital inputs (anything other than the balanced aes/ebu standard) are im-
mediately converted to balanced signals before any further routing or processing
of the signal. All digital filtering and processing is implemented in a balanced
configuration, and conversion to analog is accomplished in two opposing polarity
18-bit converters per channel.
This approach maintains the integrity of the signal, reducing the opportunities for
music-destroying noise and digital artifacts to enter the signal path.
24 bit digital architecture
and HDCD ® compatibility
All digital filtering and processing maintains a true 24-bit throughput capability,
providing greater digital resolution than any existing source component. Even the
most stringent requirements of professionals can easily be met with this design.
In addition, the DAP also incorporates High Definition Compatible Digital ® de-
coding to take full advantage of the increased resolution available from HDCD ®
encoded 16-bit CDs. The High Definition Compatible Digital ® format retains much
of the resolution inherent in professional twenty bit recordings by encoding this
information more efficiently within the sixteen bit space available within the
Compact Disc format.