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Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Limited 2 year warranty.  More info

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Shrinking high-performance audio into a desktop-friendly package, this is a full-fledged dual monaural DAC. 

The UD-301-X is a USB DAC in the Reference 301 range, with a low-profile and small footprint that comfortably fits into the smallest spaces on desktops. Supports the playback of DSD128 and PCM 192 kHz /32-bit content from PC/Mac and features an improved analogue audio stage delivering excellent sound quality to your existing hi-fi system.

In addition, an innovative CCLC headphone amplifier circuit allows you to use the UD-301-X as a high-grade, standalone headphone amplifier as part of a minimalist desktop system, comprising which a computer, headphones and the UD-301-X.

  • Tick Compact DAC with USB Audio Input
  • Tick Supports DSD128 Native and PCM 384kHz/32-bit Hi-Res Audio
  • Tick Dual Monaural Design to Eliminate Cross-Talk Between Left and Right Channels
  • Tick Headphone Sound Can be Improved by Switching Off XLR/RCA Outputs
Robust Aluminium Body

Robust Aluminium Body

A 215mm width and 238mm depth creates a footprint that allows you to place the unit in the smallest of spaces, while the full-metal body provides excellent rigidity and minimises the adverse effects of vibration on final sound quality.

Headphone Amplifier

Headphone Amplifier

When listening to Hi-Res music via the UD-301-X’s dual-monaural headphone amplifier circuit, the CCLC (Coupling Capacitor-Less Circuit) delivers a rich bass sound and quick transient responses. Conventional headphone amplifier circuits cannot avoid reduction of low frequencies and misalignment of phase caused by high-pass filtering within capacitors as they couple output stages.

Asynchronous Transfer

Asynchronous Transfer

As digital audio data travels from a computer to the UD-301-X via a USB cable, timing control for sending/receiving data packets is defined by the UD-301-X’s internal clock which is much more accurate than that of most computers. This asynchronous transfer mode theoretically eliminates signal compromising jitter, and allows digital audio signals to travel in electrically ‘cleaner’ conditions.

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Supported Formats

USB Audio Input DSD128 (5.6MHz) , DSD64 (2.8MHz)
16, 24, 32-bit, 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192kHz
Coaxial Digital Input 16, 24-bit, 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, 192kHz
Optical Digital Input 16, 24-bit, 32k, 44.1k, 48k, 88.2k, 96kHz

Digital Audio Inputs

USB Audio Input Connector : USB B-Type x 1
USB Version : USB2.0
Transfer Mode : Asynchronous Transfer Mode
Recommended Software TEAC HR Audio Player (Mac, Windows)
Optical Digital Audio Input Connector : TOS-Link x 1
Input Level : -24.0 to -14.5dBm Peak
Heading Content

Analogue Audio Outputs

Analogue Balanced Output Connector : XLR 3-32 x 1 Pair
Impedance : 200 Ohms
Max Output Level : +14dBu (1kHz, Full-Scale, 10k Ohms Loaded, 0dB Setting)
Analogue Unbalanced Output Connector : RCA Pin x 1 Pair
Impedance : 100 Ohms
Max Output Level : 2.0Vrms ( 1kHz, Full-Scale, 10k Ohms Loaded )
Headphone Output Connector : 1/4” (6.3mm) Stereo Headphone Jack x 1

Audio Performance

Frequency Response 5Hz to 55kHz ( -3dB, Sampling Frequency: 192kHz )
Signal-to-Noise Ratio 105dB
Total Harmonic Distortion 0.0015% ( 1kHz, Sampling Frequency: 192kHz )

Supported Software

Windows Windows 10 (April 2018 Update) , Windows 10 (November Update) , Windows 8.1 , Windows 8 , Windows 7 , Windows Vista , Windows XP (32bit ver.)
Mac macOS High Sierra (10.13) , macOS Sierra (10.12) , OS X El Capitan (10.11) , OS X Yosemite (10.10) , OS X Mavericks (10.9) , OS X Mountain Lion (10.8) , OS X Lion (10.7) , Mac OS X Snow Leopard (10.6)


Operating Power AC 230V, 50Hz ( UK/Europe )
Power Consumption 10W
Overall Dimensions (W x H x D) 215mm x 61mm x 238mm
Net Weight 2.0 Kg
Included Items AC power Cable x1
Owner’s Manual ( Including Warranty )

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

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This item is available to backorder. New stock will be allocated on a first-come, first-served basis.

Please see our stock information page for more details on how we show stock information on this website.


When in stock:

This item is available dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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