T H E S O N I C F R O N T I E R S U L T R A J I T T E R B U G
TECHNICAL SPECIFICATIONS
Jitter Rejection Begins at 1 kHz, at a rate of 6 dB per octave
(attenuation)
Intrinsic Jitter Less than 40 ps (picoseconds) output
Dimensions 9.5” Wide x 7” Deep x 2” High (24 cm x 17.8 cm x 5 cm)
2790 Brighton Road, Oakville, Ontario, Canada L6H 5T4 Tel: (905) 829-3838 - Fax: (905) 829-3033
The Sonic Frontiers UltraJitterbug enhances the performance
of virtually any high end digital-to-analog processor.
In response to the increasing understanding of
word-clock jitter as a major barrier to the improved
sonic performance of digital audio, Sonic Frontiers
introduces a product that verifiably and significantly
reduces jitter. The UltraJitterbug is a digital reclocker
that reduces and rejects jitter from a digital source
such as a CD player or DAT machine, and supplies
a “clean” signal to a digital-to-analog processor.
The UltraJitterbug has three digital inputs - AES/EBU
via XLR and S/PDIF via RCA coax and Toslink plastic
fibre optic - which feed the new UltraAnalog AES21
AES/EBU ultra-low jitter input receiver. The AES21
receives the digital input data, decodes it and attenu-
ates the jitter that is present on the incoming digital
data stream.
Many special measures were taken to reduce cont-
aminating noise and to prevent crosstalk. The
inputs and outputs are isolated by their own cus-
tom, wide bandwidth, low capacitance pulse
transformer. These transformers prevent any com-
mon mode noise in the digital signal from being
coupled into the sensitive internal circuitry of the
UltraJitterbug and the DAC. They also prevent the
formation of a low frequency (ground loop) con-
nection with the UltraJitterbug which could signifi-
cantly increase 60Hz “hum”, as well as couple the
data that is desired to be passed without limiting
the bandwidth (“droop”).
Further, the inputs are multiplexed relays which provide
low impedance paths for the selected signals to pass
through and high isolation between the selected input
and the other unused inputs. Careful trace routing and
guarding insure that the PC layout does not contribute
to crosstalk. Separate ground planes are used for each
circuit section to keep the noise of one section from
contaminating another.
The power supply is a full linear regulated design with
four separate linear regulators. The digital and analog
power supplies are provided with separate regulators
and the output driver has its own regulator to insure that
the output is as free from unwanted noise as possible.
The design of the power supply is conservative to
insure that the temperature of the regulators remains
low under all operating conditions thereby providing
a very long operating life.
The UltraJitterbug is built under strict quality control
utilizing the highest calibre of parts available. With
its proven performance in the improvement of a dig-
ital signal through jitter rejection, the UltraJitterbug is
a truly affordable upgrade to your existing digital-to-
analog processor.
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