HUD-mini was developed to realize sound quality that could be attained from Hi-Fi audio equipment only by connecting to USB port of notebook or desktop PC. It has simple and elegant design with easy installation and mobility using external USB DAC, and it was designed as high performance Hi-Fi audio equipment internally applying integrated design to the maximum in small space to make best performance in spite of compact size.

The Finest Quality DAC with Powerful Dual Headphone Amplifier

HUD-mini 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 300ohm headphones, providing clear and high fidelity sound.

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.

Feature

1. Application of high purity TCXO on Clock Generator of USB Controller

2. Application of high performance ALPS potentiometer on head phone output volume controller

3. Application of high grade film capacitor of WIMA on a low-pass filter terminal

4. A total of five special purpose regulators, high performance low-ESR and many tantalum capacitors are applied for supplying stable and high quality power.

5. The DAC power terminal is applied with high performance solid capacitors of super low-ESR & high ripple current.

6. A highest quality metal film resistor of Vishay-Dale applied for high-end audio equipment is adopted.

7. DDC function is mounted capable of outputting a USB digital audio signal to the S/PDIF (Optical TX).

Loaded with Burr-Brown PCM1791A, the high quality D/A Converter

The PCM1791A provides balanced voltage outputs, allowing the user to optimize analog performance externally. The PCM1791A also accepts interface to external digital filter devices (DF1704, DF1706, PMD200). The PCM1791A also supports the time-divisionmultiplexed command and audio (TDMCA) data format. Sampling rates upto 200 kHz are supported. The data converters use TI’s advanced segment DAC architecture to achieve excellent dynamic performance and improved tolerance to clock jitter.

Installation of Temperature Compensated Crystal Oscillators (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.

Slim & Smooth Design

A subdued silver colored body is curvaceously treated to receive a smooth feeling when grasped with one hand, and a finishing touch of slim panel on front/rear surfaces maximizes a compactness of the product.

Equipped with Highest Grade of OPAMP and High Performance Headphone Amplifier

It realized high performance and high fidelity audio with very low distortion of THD+N 0.00003% and ultra low noise by the adoption of LME49860 of National Semiconductor for DAC output stage. Also, you can enjoy sufficient sound volume using the headphone of less than 300OHM by the adoption of AD8397 of Analog Device. High quality audio signal which is generated through high-level components is applied to speaker, earphone or headphone as it is providing Hi-Fi level of audio environment.

Equipped with LDO Regulator of High Performance and Ultra Low Noise and Inverter Circuit for Power Stage

Positive and negative voltages are required to drive high performance OPAMP of dual power type. After the rectification process of USB power supplied via USB port to stable power without noise through LDO regulator and Low-ESR capacitor, the best analog signal with ampleness and density which can be attained from high-end equipments can be created by the provision of consistent dual power to OPAMP circuit via high performance inverter.

88. 2 kHz Support

88. 2 kHz rarely supported on most of USB Audio DAC is supported in native mode.  ※ 88.2kHz support enables a multiple up-sampling relative to 44.1kHz, which is an audio CD format.

Anti-POP Circuit Mounted

The line-out output terminal is mounted with an anti-POP circuit to minimize pop noise generated from a speaker when a computer is turned on or off.

Convenient Portability and Compatibility

Convenient portability enabling easy installation with a simple USB cable at any place where a computer is available, and optimal compatibility free from user OS environment just by plugging without a cumbersome installation of driver to automatically recognize Windows XP/Vista/Windows 7/8 and Mac OS X

※ Installation by being downloaded with a separate driver from website enables use of Qsound (Windows XP excepted) and AC3-Passthrough function from window, and is supported by 24bit/88.2kHz and the like.

Super light and compact Mini DAC

Most of DACs are imagined as being somewhat unsophisticated, but HUD-mini is so light and small-sized as to be held in one hand, thereby providing a convenient portability. Although there is a disadvantage in that small size may restrict DAC function to decrease sound quality, HUD-mini is fully complemented to overcome the restriction, and has come a long way to reduce degradation of sound quality based on objects of super-lightness, compactness and accumulated technology only available at Audinst.

Specifications

Interface: USB 1.1 and USB 2.0 Full Speed compliant

Line Out / Headphone Connectors: RCA / Stereo phone & Stereo mini

Digital Out(S/PDIF): Optical

OS: Windows XP / Vista / Windows 7 / 8, Mac OS X

USB 1.1 and USB 2.0 Full Speed compliant: 16 / 24bit, 44.1 / 48 / 88.2 / 96kHz

D/A Converter: 24bit / 192kHz, 113dB SNR

Headphone Impedance: 16~300OHM

Dimension(mm) / Weight: Dimenstion(mm) : 100(W) x 75(D) x 22(H) / 160g

Package Contents:

- HUD-mini body

- User’s Manual (including warranty)

- USB Cable (USB A to B Type, 1.5M)

- RCA Cable (1.5M)

- Rubber feet (Body Fixing)