User manual of Nobsound NS-04G PRO
Warm tips:
This is latest updated version that simplify the circuit, upgrade the components and greatly improve the sound quality.
- With standard stereo RCA audio input, perfectly compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc.. With built-in preamplification circuit, can match well with audio source that with low signal output.
- Adopting classical TPA3116 IC chip in each channel, class D amplification, the max output power can reach 100W+100W(4Ω load), easily to drive all home bookshelf/ computer/ desktop/floor-standing/outdoor passive speakers.
- Reasonable circuit, concise wiring layout and perfect protection, no sparks no shock. With ultra-low distortion and dynamic balance, the sound is very smooth and natural, powerful in low frequency and delicate in high frequency. The speaker terminals use a staggered design, which provides more space ond makes connection easier.
- Mini size with exquisite appearance, aluminum alloy black case looks fashionable and attractive. With strong output power and high-quality sound, exclusively designed for the customers who pursue HiFi sound, very suitable for home / office desktop audio system use.
- Brand: Nobsound
- Model: NS-04G PRO
- Audio input: stereo L/R RCA
- Audio ouput: banana speaker jacks
- Number of channel: 2.0
- Chip: TPA3116D2 ×2
- Max. output power: 100W+100W
- Frequency Range: 20Hz-20kHz (±1dB)
- THD: ≤ 0.01%
- SNR: ≥ 118dB
- Input sensitivity: ≤ 280mV
- Matched speaker impedance: 4-8Ω
- Working voltage: DC 12V-24V
- Dimensions(W*D*H): 87*108*35mm / 3.43*4.25*1.37in
- Package dimensions(W*D*H): 150*150*50mm / 5.91*5.91*1.97in
- Net weight: 290g / 0.56lb
- Package Weight(Without power supply): 400g / 0.88lb
- Package Weight(With power supply): 700g / 1.54lb
- NS-04G PRO Amplifier ×1
- 19V Power Supply(Optional) ×1
- User Manual ×1

Dual TPA3116
- Classic dual TPA3116 audio chip can offer 100W x 2 high power
- Suits most home bookshelf/desktop passive speakers

Volume Control
- Smooth volume control knob
- Integrated power switch design

RCA Input
- Standard stereo RCA input
- Compatible with many audio devices like phone, TV, MP3, DAC, PC .etc

Upgrade DC Connector
- Upgrade DC connector can ensure higher electronic safety. No spark issue