NuForce DDA-120 User manual

NuForce
DDA-120
Integrated Amp
User’s Manual
ALSTAGNZ

1
PB
Nuforce DDA-120 Integrated Amp
FCC STATEMENTS
This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment o and on, the
user is encouraged to try to correct the interference by one of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
SAFETY PRECAUTIONS
Observe the following Safety Precautions when operating the device.
• Only use the accessories that are included in the package.
• Do not expose the device to direct sunlight.
• Do not place the device in a damp condition or high humidity.
• Do not cover or block any ventilation openings of the device.
For proper ventilation, make sure there is at
1
COAXIAL
2L
R
AC 100(115)V / 230(240)V
FUSE T2.5A 250V
OPTICAL
4
OPTICAL
5
EXPANSION SLOT
6
OPTICAL
OUTPUT USB
3
SPEAKER
L
SPEAKER
R
10
cm
least 10cm
clearance at the back of the unit.
• Do not drop the device or subject it to severe impact.
• Do not operate the device during thunderstorms.
• Protect all cables and power cord from being walked on or pinched.
• Keep the device away from water.
• Unplug the power cord before cleaning. Wipe the device with a clean, dry cloth.
• Do not attempt to repair this device yourself.

2
INTRODUCTION
consumer entertainment and streaming devices without the complexity of an audio/video receiver.
digital via one USB, one coaxial, two optical inputs, and one expansion slot for a Bluetooth receiver dongle.
Feafures
• 176.4kHz input sampling rate
• 3GB/s over-sampling rate for smoother, more natural reproduction
• An on-chip clock reference signal for synchronizing incoming digital audio data -Data re-clocking results in
ultra low jitter performance
• 100% linear frequency and phase response (+/- 0.1dB from 20 to 20kHz)
• THD+N = 0.07%
• Signal-to-noise ratio > 95dB A-weighted
• High-quality, audio-grade parts throughout
Product Overview
Front View
12
4 3
1.
2. Reciever
3. Volume Display
4. Input Source Display
Rear View
1
COAXIAL
2
L
R
FUSE T2.5A 250V
OPTICAL
4
OPTICAL
5
EXPANSION SLOT
6
OPTICAL
OUTPUT
USB
3
SPEAKER
L
SPEAKER
R
12678
459 3
1. RCA Analog Input (Converted to24-bit/96kHz)
2.
3. Digital USB2.0 Input (Adaptive mode)
4. Digital TOSLINK Input
5. Digital TOSLINK Output
6. Expansion slot / Bluetooth receiver dongle Input
(Digital S/PDIF format)
7. Left channel speaker output (5-way binding post)
8. Right channel speaker output (5-way binding post)
9. AC Inlet

3
2
Nuforce DDA-120 Integrated Amp
Basic Operating
To Power on/o
ON ON: Pressing after turning back switch for
15 seconds
5 Sec ... OFF OFF: Long pressing for 5 seconds
IMPORTANT!
Speaker Output: Connect the left and right speaker cables to the output terminals. In order
to avoid shorting out the DDA120, before turning on the power, please make sure that the
polarity of the speaker cables is properly terminated to the loudspeakers and the DDA120.
To select the desired input, simply press the Input button it cycles through all 4 inputs sequentially.
INPUT
Input R1 – RCA Analog
Input C2 – Coaxial
Input U3 – Digital USB2.0
Input O4 – Optical Input #4
Input O5 – Optical Input #5
Iuput E6 – Expansion slot for a Bluetooth receiver
dongle
Using the Remote Control
ON
MUTE VOL
OFF
INPUT
6
5
2
4
3
1
1. On : turns on the DDA-120
2. O : turns o the DDA-120
3. Mute
4. Input : cycles through the DDA-120’s six inputs
5. Vol : raises the volume
6. Vol : lowers the volume

Nuforce DDA-120 Integrated Amp
4
Dim Mode
In the Dim Mode, when the unit idles for three seconds or more, the front LED turns o.
Note: When the LED is o, the unit is still operating. The LED will turn back on when the remote or knob are being
employed.
To Enable Dim Mode:
Press and hold Power On button while pressing the Input button.
SPECIFICATIONS
Input (1) x RCA Analog (converted to24-bit/96kHz), (2) x Digital TOSLINK,
(1) x RCA Digital Coaxial (75Ohm), (1) x Digital USB2.0 (adaptive mode),
(1) x expansion slot - Bluetooth receiver dongle (digital S/PDIF format)
Output (1) x Speaker-level, (1) x Digital TOSLINK
(output is pre-volume control & tracks input selection)
Frequency response 20 to 20kHz +/- 0.1dB
THD+N 0.07% @ 15W
SNR > 95 dB A-weighted
USB Input Sampling Rates 44.1, 48, and 96kHz (maximum 96kHz)
S/PDIF Input Sampling Rates 44.1, 48, 88.2, 96, 176.4kHz
Peak Output Power 250W
Bit Resolution 1624-bits
Dimensions (W x H x D) 9” x 2” x 8.5”
Weight 2.64 lb