Soekris Engineering ApS dac1541 Users Manual
www.soekris.dk 3 July 2017
Introduction
The Soekris dac1541 is a fully balanced Audiophile discrete R-2R DAC, with USB and SPDIF
inputs and outputs to either the built in headphones amplifier on a front mounted XLR or 6.3mm
Jack, or to line level outputs on rear mounted XLR and RCA Phono connectors. The dac1541 is not
just any regular DAC, the sound quality is the absolute best available, thanks to the ultra high end
design with a discrete R-2R sign magnitude DAC using a total of over 400 small and very precise
resistors, discrete headphones amplifiers with zero negative feedback, delivering high power to
almost any headphones, all powered by high reliability switch mode power supplies with 6 discrete
linear low noise and low impedance power regulators and 3 low noise regulators for the digital
parts.
The dac1541 R-2R DAC circuit is fully isolated from the noisy computer USB interface and the
SPDIF inputs are also all transformer isolated. It supports input signals on the USB interface up to
24 bit / 384 Khz PCM audio, and up to DoP-128 (x2) and DSD-256 (x4) audio, or up to 24 bit / 192
Khz PCM audio on the various SPDIF interfaces. It has a fully digital volume control and four sets
of digital anti-aliasing filters to fit any taste, and have a flexible crossfeed circuit for the
headphones. The dac1541 is designed and built in Denmark, using advanced surface mount
technology and parts from only the highest quality suppliers, with a full aluminum casing.
Quick Start
Plug in the supplied USB Cable to the dac1541 and connect it to your computer, plug in your
headphones, set the rear left switch to “PHONES”, set the rear right switch to “USB1”, select
“soekris dac1xxx” as output in your computer settings and start playing music. The default power
up settings for volume, anti-aliasing filters and xfeed are stored in flash memory and can be
changed, see front view description for details.
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