Hi-Fi USB Audio DAC & Headphone Amplifier

Hi-Fi Audio Capabilities

HUD-mx1 presents perfection-like sound quality from DAC no one has ever experienced before, with its unique circuit organization and highest quality components. This unit supports both stereo phone jack and stereo mini jack standards without requiring a separate gender converters, while its dual headphone output provides enough driving power to be used with 600Ω headphones, providing clear and high fidelity sound.

Simple and Neat Overall Curve Design

Its overall smooth curve design features reverberating silver color to reflect elegant fashion,
replacing previously hardened looks often found on the front panel of DAC. The design also
eliminated any complicated words, making it look simple and convenient for the users to operate.

Dynamic Range 117㏈

High End Performance

Our high-end audio USB DAC provides the dramatic high quality playback, bringing out
the latent possibilities of PC Audio from computer-based average audio quality to CD-quality
sound through our advanced technologies.

WM8740 D/A converter

HiFi USB Audio

Speaker Protection circuit

24/96㎑ Support

Power Protection circuit

DUAL Headphones

The Finest Quality DAC with Powerful Dual Headphone Amplifier

HUD-mx1 presents perfection-like sound quality from DAC no one has ever experienced before, with its unique circuit organization and highest quality components. This unit supports both stereo phone jack and stereo mini jack standards without requiring a separate gender converters, while its dual headphone output provides enough driving power to be used with 600Ωheadphones, providing clear and high fidelity sound.

Loaded with Wolfson's WM8740, the Finest D/A Converter in the Market Today

Wolfson's WM8740 DAC features unique Linear phase half-band FIR filter, offering flexible interface with any external digital filter solutions. Furthermore, it features 24bit/192㎑ stereo DAC, which provides the highest singal to noise ratio (SNR) and the lowest total harmony distortion (THD) for close to perfection quality audio playback for the money. Companies like Kenwood, Pioneer, Arcam, and Cambridge Audio have incorporated it, recognizing its outstanding performances and leaving no doubt its status as the finest quality DAC.

Installation of TCXO

TCXO is made of an extremely thin crystal, creating peculiar vibration when applied with electricity. It is often used on resonance circuit to generate uniform frequency of electronic circuits. However, frequency error in which vibration counts of TCXO vary can arise depending on outside temperature, and such appearance can become a main reason for errors or frequency distortions on precision electrical equipments. In order to reduce frequency discrepancies due to exterior temperature, TCXO uniformly maintains interior temperature within crystal oscillator and fixates the frequency, making it an essential component for audio equipments sensitive to frequencies.

Automatic Adapter Power ON/OFF

If your computer is turned on and the product is recognized as a USB audio device, adapter will be automatically turned on. On the other hand, if your computer is turned off, the adapter will be automatically turned off.

High-REsolution, High-Output

The HUD-mx1 is fitted with the quality of OPAMP LME49860, OPA2134, AD8397 and DAC of Dynamicrange 117㏈, and it is possible to listen sound that is close to the original. The HUD-mx1 supports a large impedance from 16Ωto 600Ωand so there is a wide choice of selections of headphones.

Sound that is No Distorition.

It was contained WIMA's coupling capacitor and the TCXO, and it was muted a distortion of sound through circuit design of noise reduction. And you can hear better clean sound because improved the wide bandwidth and the resolving power.

Speaker Protection Circuit

When output is switched from a headphone to a speaker, a circuit to protect a speaker temporarily stops high amplitude signals from being transmitted into a speaker during playback with high output.

The output is entirely different by the stable power supply.

The unstable power supply can lead to noise occurrence and lower sound pressure. The HUD-mx1 is supplied the stable power supply to each part by circuit design of special power section. And because this has enough output of only USB power via Efficient Power Consumption Circuit, you can listen to the steady music without an adapter.

Convenient Portability

Convenient Portability and Compatibility

Typical hi-fi DAC is inconvenient to carry around due to its large size, yet USB DAC has the advantage of being small and lightweight for the purpose of using it connected to the computer. As the unit gets smaller, the function of DAC reaches its limit and sacrifices with low quality audio sound. Our HUD-mx1 has overcome such limit to the maximum, developing ultra lightweight, compact DAC with reduced drop-off in audio quality. You can enjoy the music with highest quality possible audio sound wherever the computer is and, with its plug and play function, HUD-mx1 automatically becomes compatible under any circumstances, guaranteeing simple operation without the need to install cumbersome drivers.

Hook-Up Application

HUD-mx1 also supports the connection with smart devices that support USB Audio. Finally, it also maximizes user convenience and power efficiency as it supports automatic power ON/OFF and power saving mode function when used with USB input.

※ Please refer to our website for the method of connecting to a smart device.

Front Panel

① & ② Headphone-Out ( 6.3mm stereo phone / 3.5mm stereo mini )
③ Output Selector Switch
④ Indicator
⑤ Volume Control

Rear Panel

⑦ Digital-Out ( Optical-Out )
⑧ USB Port
⑨ Power Connector
⑩ RCA Line-Out

Minimum and Recommended System Specifications

• Intel dual-core CPU or better, or equivalent AMD CPU (quad-core CPU recommended)
• 2GB or more system memory (4GB or more recommended)
• Motherboard / laptop equipped with a USB2.0 or USB 3.0 port
• Install OS in a latest type HDD that offers a fast transmission speed (SSD recommended)
• Microsoft Windows 7 / 8 / 8.1 / 10 (64bit recommended)
• Amplifier and speaker or 2 channel active speaker / headphone / earphone
• Receiver amplifier with optical input (Not required. Applicable when using PCM optical output)

To fully utilize the performance of HUD-mx2’s USB audio, the specification of the system such as desktop PC or laptop has to be at a certain level. The level doesn’t have to be high necessarily but should not be too low.

Package contents

• HUD-mx1 body
• Power Adapter (DC 15V / 0.5A~1A)
• RCA Cable (1.5M)
• USB Cable (A to B Type, 1.5M)
• Rubber feet (Body Fixing)

※ A program/driver installation CD is not included in the product content. The above product content may be changed without notice for enhancing product functions.


Dimensions / Weight
100 (mm) x 105 (mm) x 29 (mm) / 244 (g)

Headphone Output
Type : 1/4” Stereo phone & 1/8” Stereo mini jack
Max Out Level : ±10Vpp ( 600Ω, when inserts the jumper )
Max Output Power : 800㎽ ( 32Ω,5Vpp )
Output Impedance : 5Ω (Load : 16Ω ~ 600Ω)

Line Output
Type : Unbalanced RCA
Level : ±3Vpp max
Impedance : 200Ω

USB Audio
Type : Max 24bit / 96㎑, USB 1.1 / 2.0 Compatible
OS Support : Windows 7 / 8 / 8.1/ 10, Mac OS X Compatible
Digital Audio Output
Type : S/PDIF Optical on TOS-LINK 32~96㎑
Format : IEC-60958, S/PDIF Compatible
Sample rate : 32, 44.1, 48.0, 96.0 ㎑

D/A Converter
Type : 24bit, High Performance 192㎑ Stereo DAC
Format : 117㏈ (‘A’ Weighted stereo @48㎑)
THD+N : -104㏈ @ FS

Operating Voltage : 24.0V(±12V),
D/A Out : LME49860 (DIP, Socket Type)
Line Out : OPA2134 (SMD Type)
Headphone Out : AD8397 (SMD Type)

Power Supply
DC 15V / 0.5A~1A