DDH-1
Owner’s manual
3
1. Package Contents
Please make sure you have all of the following contents:
(1) 12V 2A AC-DC Adaptor: 1 pc
(2) USB A male - USB B male cable: 1pc
(3) Quick start guide: 1pc
(4) Driver Installation CD-ROM: 1pc
Other connecting cables are not included.
2. System requirement
(1) Operating system
•
Microsoft Windows® XP incl. SP3 – Not recommended.
•
Microsoft Windows® Vista (32/64 bit incl. SP2)
•
Microsoft Windows® 7 (32/64bit)
•
Microsoft Windows® 8 (32/64 bit)
•
Apple Mac OS X (10.6.4 or later)
(2) Suggested system requirement
•
Genuine Intel® Pentium® IV 2GHz, AMD® equivalent
processor or faster (Microsoft Windows XP)
•
Genuine Intel® Pentium® IV 2.4GHz, AMD® equivalent
processor or faster (Microsoft Windows Vista / Windows
7 & 8)
•
Intel, AMD or 100% compatible motherboard chipset
•
1GB RAM (Windows XP) / 2GB RAM (Windows Vista /
Windows 7 & 8)
•
10GB of free hard disk space
•
USB type A female USB 2.0 hi-speed port
3. Product features
• All in one device for USB DAC, standalone DAC & Preamp,
USB-DDC, standalone DDC with analog input, headphone
amplifier.
• Asynchronous USB operation: bit-perfect digital audio and
low clock jitter.
• High precision TCXO for asynchronous mode guaranteed
< 2.5ps timing (period) jitter to achieve the highest clear
sound. 44.1 kHz (and multiples, 22.5792MHz ±1.0ppm
TCXO) and 48 kHz (and multiples, 24.576MHz ±1.0ppm
TCXO).
• USB audio class 2 (up to 24-bit /192kHz) and high-
speed asynchronous mode: Microsoft Windows® XP,
Windows® Vista and Windows® 7 (32-bit/64-bit) with
special driver compatible with WDM/Direct X, ASIO 2.1
and WASAPI exclusive. Apple OSX version 10.6.4 and
above (no driver install required).
• Up to 24-bit/96kHz full speed mode compatible. If enabled
for UAC2 when connected to an FS hub, it will fall back to
UAC1, full speed mode.
• External 12V 2A high current DC power supply unit for high
quality audio performance.
• Device supply voltage is generated by high precision DC/
DC converter and set to +/- 10 V. Very low ESR conductive
polymer capacitors enables efficient noise reduction.
• All high performance audio parts (Panasonic ECH
metallized Polyphenylene film capacitors, Nichicon audio
grade capacitors, conductive polymer aluminum solid
electrolytic capacitors) to be enclosed in a compact size
• Full aluminum finished exterior design case.
• Audio muting transistor for anti-pop control.
• ESD protection varistor, USB Surge protection circuit
enabled.
• Standard dual RCA stereo line output jack with fixed gain
and variable gain controlled by FIX/VAR select switch.
• High−performance dual unit precision potentiometer
for line output (at variable mode) and headphone output
volume control.
• Quad-level LED indication for sample rate status: 44.1kHz,
48kHz, 88.2kHz, 96kHz, 176.4kHz and 192kHz.
• A nalog ou t pu t mode suppor t headphone & line
simultaneous output.
• Dual line output mode support pure DAC mode (fixed gain)
and preamp mode (variable gain, potentiometer volume
control).
• 6.35mm (1/4”) stereo phone jack for professional
headphone output.
• 3.5mm (1/8“) stereo phone jack for various headphone/
earphone output.
• Supports wide range impedance headphones up to 600Ω.
• Up to 24-bit/192kHz S/PDIF input (TOSLINK optical &