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Digital-to-Analog Converter & Headphone amp




  • Description
  • Features
  • Specifications
  • Reviews
  • Downloads

"Vocals are beautiful, instrumentation clean and crisp especially the bass and piano, sound is musical, sounds like I'm in a recording studio where they're taping live." So says one of our customers who likes to use the uDAC HD as a headphone amp with his Sennheiser HD 650’s.

No matter how you choose to use the uDAC HD, you’ll be amazed how such a small package can deliver such a great sound. The building block is the the amazing Sabre DAC, a chip that’s derived from the same platform as the industry-standard ESS9018 found in our flagship DAC-2 series. The ESS patented Hyperstream™ and Time Domain Jitter Eliminator technology guarantees a jitter-free digital signal and remarkable sound from any source.

As a fully portable unit, the uDAC HD’s headphone stage allows for high-quality music reproduction when powered through your computer’s USB port. When plugged-in with the unit’s DC power converter, the uDAC HD automatically becomes a superior performing Class A headphone amp. 



  • State-of-the-art USB Technology
  • 24 bit 192 kHz Asynchronous USB Input
  • Optionally powered by USB or DC supply (USB cable and DC power supply included!)
  • ESS Sabre DAC
  • Class A Output Stage
  • Analog RCA Outputs
  • Built-in Headphone amp
  • Signal Lock Light
  • Compact (3.5" x 3.5" x 1")
  • Covered by a 5 YEAR WARRANTY (Original Purchaser


  • Max Output Level: 2.5V
  • Frequency Response 20Hz-20kHz: ± 0.2db
  • S/N Ratio: -103db
  • Noise (A weighted): 15µV
  • Output Impedance: 50O
  • THD+N (A weighted): 0.0035%
  • Channel Tracking: ± 0.05db
  • Crosstalk: > 94db
  • Headphone Output (300O): 200mw
  • Headphone THD+N: 0.006%


The Audio Circular: No.7 in a Series of Parallel Narratives - The Wyred4Sound uDAC-HD

I found the uDAC-HD to have very good macro dynamic capability as well as amazing bass reproduction through a review pair of the fab Von Schweikert VR-22 loudspeakers.
Gary Beard
— Positive Feedback Online

First Look: Wyred4Sound µDAC-HD headphones amp/DAC unboxing

The sound is so captivating and fun. Bass hits hard and tight.
Michael Liang
— HiFiGuy You Tube Channel