1. Before turning on the amp, please make sure the volume knob
at the leftmost end, avoid high volume ( high output power )
damaging your speakers.
2. Default OPTIONAL 19V power supply, whose output power is
enough to drive most home speakers. If you buy the version
without power supply or want higher output power, please
prepare high-quality power supply by yourself. Powered by 24V
power supply(4Ω load), the actual output power can reach 50W
or 100W per channel.
NS-04G / NS-04G PRO
50W*2 / 100W*2 Stereo Digital Power Amplifier
NOTICE
1. Please connect power adapter to the amplifier firstly and then
plug the power cord to the socket.
2. Connect audio device such as TV, CD player to the amp’s input
with high-quality RCA cable, and connect proper passive
speakers to amp’s output.
3. Clockwise rotate the knob to turn it on, then you can rotate
the volume knob to get proper volume and enjoy HiFi music.
HOW TO USE
PARAMETERS
1
Model
Max. output power
Chip
Op amp
Audio input
Audio output
Number of channel
THD
Frequency response
SNR
Input sensitivity
Speaker impedance
Matched loudspeakers
Working voltage
Default power supply(optional)
Dimensions(W*D*H)
Package dimensions(W*D*H)
Net weight
TL072
Stereo L/R RCA
Banana speaker jacks
2.0
≤0.1%(1KHz)
20Hz-20KHz
≥ 118dB
≤ 280mV
4Ω-8Ω
DC12-24V (5.5mm / 2.5mm)
19V
90*108*35mm / 3.54*4.25*1.37in
150*150*50mm / 5.91*5.91*1.97in
252g / 0.56lb
2
NS-04G PRO
100W+100W
TPA3116D2 ×2
NS-04G
50W+50W
TPA3116
3-8 inch 10-150W 3-10 inch 10-200W
1
www.doukaudio.com
MadeinChina
DC12V-24V
OUTPUTR L
RL
INPUT
Address: Room 1329, Wang Cheng Building, Long Guan street,
Long Hua new District, Shenzhen, Guang Dong, China
Contact: LIU CHENXI Tel: +86-18570015672
Email: [email protected]
CONTACT INFORMATION
3 4
Power indicator Power switch / Volume knob
V
O
L
U
M
E
Min Max
Nobsound
TROUBLE-SHOOTING MANUAL
Problems
Cannot start up
Exceed rated
output power
Power switch isn't
pressed or toggled
Audio source isn't
connected or mute
Use another power
adapter to check out
Connect power
adapter or restart
Power adapter isn't
connected
Power adapter
is broken
Connect audio source
or turn up volume
Check output or change
matched speaker
Change high-quality
power adapter
Change shielded audio/
speaker cables
Use your player of
mobile phone to test
Change high-quality
matched speakers
Search correct
Blueototh Name
Disconnect all device a
nd turn off Bluetooth
Turn down the volume
of amp/preamp/source
Disconnect all device
and turn off Bluetooth
Volume of amp is
adjusted to minimum
Output shorted or
speaker isn't matched
Search and click wrong
Bluetooth Name
Bluetooth has been
paired by other device
Bluetooth input is prior
and has been paired
Output power
exceeds rated output
Press or toggle
power switch
Bluetooth
can't connect
Stop working
after a while
LINE input
can't connect
Distortion
Noise
No sound output
SolutionsReasons
Turn up volume Choose
correct input mode
Poor power adapter
Poor cables
Poor audio source
Poor speakers
Select incorrect
input mode
Turn down the
volume of amp
