Purple Audio Sweet Ten Rack MODULES
Many manufactures, including past Purple Audio prototypes,
use linear power supplies for their racks. Traditional
wisdom holds that linear power supplies are ideal
for audio and generate less noise and interference.
In many cases, especially with poorly designed "off
the shelf" switching power supplies, this is true.
However, in the case of a 10 slot series 500 rack,
even a well designed linear power supply generates
a substantial magnetic hum field and far too much
heat to allow for internal mounting. This problem
is caused in part by the wide variation of line voltage
across the world. External power supplies are cumbersome
and inconvenient and consideration still has to be
taken as to their placement in relation to other equipment.
With the advancement of switching power supplies it
is now possible to have a switcher that does not compromise
audio performance and delivers or exceeds all specified
current needs. We have spent years perfecting just
such a power supply. We have comparatively tested
all of our, and many of our competitors, modules at
full bandwidth (10Hz - 500kHz) on lab quality over
built bench supplies to make sure that the Sweet Ten
is not compromising audio performance in any way.
Simply put, your 500 series modules will perform at
their highest level in our rack. Audio performance
improvements are considerable.
The Sweet Ten top, side, and back panels are finished
in trivalent yellow chromate cold rolled steel instead
of painted steel for improved grounding and shielding.
Our ground plane motherboards provide additional grounding.
Additionally, the rack motherboard has .1uf high frequency
bypass capacitors at each slot to improve filtering,
especially for modules with DC/DC converters. Functionally,
the Sweet Ten offers 2 inputs and 2 outputs per slot.
Many of our modules already take advantage of second
output and our Moiyn mixer module will use the second
input to allow for stereo balanced source injection.
Future uses of these connectors include fader loops
on future modules as well as a few surprises!
