Entry Level Discrete R-2R Sign Magnitude DAC

We might call it entry level, but there is absolutely no entry level about the technology and sound quality on this little gem. Based on the well tested and renoved Soekris R-2R technology, just a little smaller that its bigger siblings and without the headphones amplifier, but otherwise with the same performance and quality.

It have the fantastic clean and natural sound of a 25 bit R-2R sign magnitude DAC, built with two hundred tiny and very precise thin film resistors. The line output buffer is a high performance zero feedback design built with discrete parts. The main power supplies are ultra low loise, low impedance and very fast, also built with discrete parts.

The music is delivered over an USB interface in both PCM and DSD formats, or by the SPDIF or Toslink inputs. It is then buffered and reclocked using a precise and very low jitter oscillator, with the digital processing done in a programmable FPGA chip, with a set of selectable advanced digital filters and a digital volume control.

Technology that used to be reserved to a few DACs costing the same as a car. But now thanks to smart Danish design and automated manufacturing in Denmark it will be available at a much more reasonable price.

Users Manual: download
Windows vers 7-10, 32 & 64 bit driver: download


The dac1321 is discontinued, will be replaced by a new dac1221.

dac1321 front view dac1321 rear view
dac1321 internals dac1321 retail packaging


THD @ -1 dB  <0.012%
THD @ -60 dB <0.04%
Resistor Precision 25 bit, 0.02% - 0.05% Resistors
Clock Jitter RMS 0.8 pS typical
S/N 20 Khz Bandwith >120 dB unweighted
Frequency Range +0.1 -1.0 dB 20hz - 20Khz
USB Input Type B, Isolated, Full/High Speed
USB Input Mode Selectable Audio Class 1.0 or Audio Class 2.0
SPDIF / Toslink Inputs  Up to 24 bit / 192 Khz
USB Input PCM Up to 24 Bit / 384 Ksps
USB Input DSD Up to DoP-128 and DSD-256
Digital volume control -80 dB to +10 dB
Output Line RCA, 2.0V RMS, Zout 10 ohm
Power Consumptation From USB or 5V DC Plug, max 3W
Size 140  x 185 x 30 mm
Weight 0.9 Kg
Warranty 3 Years