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INTRODUCTION
Thank you for
your purchase
of the Krell
REFERENCE 64
Digital-to-Analog
Processor
and welcome to the Krell
family of
audio components.
Krell
is dedicated
to the development
of
technologically
advanced components for the reproduction
of
digitally
recorded
music.
The REFERENCE 64 redefines
excel-
lence in the Krell
tradition
of uncompromising
performance
through
leading-edge
technology.
The REFERENCE 64 is designed
to sound wonderful,
but to
look and function
as a world-class,
reference-caliber
compo-
nent.
The REFERENCE 64 utilizes
all
proprietary
Krell
cir-
cuitry.
The digital
input is decoded by the Krell Data Recovery
and Jitter
Rejection
Module, virtually
eliminating
jitter
and
associated
clocking
errors.
To further
reduce the potential
of
clocking
errors,
the TimeSync linking
system allows the
REFERENCE 64 to lock
and operate
with the CD transport's
clock output.
The data signal
is run through four serial
Motorola
DSP-56001 processors
(two per channel,
in series)
running Krell
written
software
contained
within
socketed
EPROMs. This method allows for simple installation
of future
software
updates.
Within the digital
section,
data is
oversampled
64 times.
Data then goes through
Krell's
own
custom DAC modules.
After conversion
is complete,
signal
is
passed
through
the DC coupled,
discrete,
complementary
Class
A output
stage.
The REFERENCE 64 utilizes
separate
highly
regulated
power supplies
containing
three
50VA toroidal
transformers.
All power supply circuitry
is housed in a sepa-
rate
chassis,
and mechanically
linked
to ensure proper ther-
mal stability.
Each digital
input
in the REFERENCE 64 has its
own selection
button and direct~
path to the processing
stages.
Assembly of this
product
is second to none. Every section
is
assembled
within
rigid
quality
control
standards.
The REFER-
ENCE 64 is a pleasure
to use and will
bring
many years of
listening
fulfillment.
PAGE 2
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