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USB Edition provides the basics: USB input and RCA output.
USB + Optical Edition provides selectable USB and Optical inputs and a power button with relay muting to eliminate power-up transients.
All OL DACs ship with a 15VAC power adapter and are 100% AC powered for consistent performance.
Covered by our 2-year transferrable warranty
We decided to set the highest bar with OL DAC, by far outperforming ODAC and eclipsing the sea of alternatives beyond just benchmarks. OL DAC's external AC power supply ensures 100% consistent noise performance, relay muting eliminates power-up transients, and it's the only DAC at its price point with both USB and optical inputs. The minimalist USB Edition relies on the same external AC powered design, minus relay muting and optical input.
"You can marry this little low noise, low jitter, low distortion DAC to any amp you wish and end up with banging budget audiophile results (did I mention that the OL DAC is $139?)"
OL DAC Review, February 2017
"I think this DAC is a great value. For $139, you get a well-built, well-design, high performance DAC. It is audibly transparent, and if NwAVGuy were still around, I'm sure he'd praise it as objective, just like his original product designs."
OL DAC REVIEW, APRIL 2017
OL DAC provides the basics. Its USB Audio Class 1 engine is plug-and-play with all operating systems, and optional optical input expands connectivity to home entertainment. Mode is easily selected by a front mounted slider switch.
Differential output of the AK4490EQ DAC is summed by a low noise amplifier, with DC coupling throughout. Directly drive any load!
OL DAC is powered by the same circuitry developed for our flagship EL DAC, using an AC power adapter and 9 linear regulators to ensure consistent rail voltage and super low ripple (no USB power). Never be bothered by USB hubs or OS power management configuration again!