• 2.1 channel Bluetooth amplifier: NS-14G Pro features Bluetooth, RCA, and AUX inputs, along with AUX, speaker, and SUB outputs, making it compatible with a wide range of audio sources, including smartphones, laptops, computers, CD/DVD players, and TVs. Equipped with the QCC304X Bluetooth chip, it supports advanced audio codecs like aptX/aptX-HD, ensuring low power consumption for extended battery life and robust connectivity that minimizes dropouts.
• Powerful output with dual TPA3255 chips: utilizing 2PCS TI TPA3255 chips, NS-14G Pro delivers an impressive maximum output power of 300W per channel (L/R) and 300W for the subwoofer. With the equipped 48V/5A power adapter, it can easily drive most home passive speakers and subwoofers. Alongside its high power output, the high-quality amp chips also contribute to exceptional sound quality, with a THD of only 0.01% and a SNR no less than 108dB.
• Dual power sockets for enhanced reliability: designed with a reliable backup power source, the NS-14G Pro ensures continuous operation during a main power supply insufficiency or even failure. The secondary supply activates promptly, maintaining circuit functionality and delivering sufficient power to the high-performance digital amplifier for uninterrupted audio playback.
• Three-sided ventilation for optimal cooling: featuring ventilation openings on the sides and bottom specially designed for high power amps, NS-14G Pro maintains optimal operating temperatures, stabilizing performance and preventing overheating that can lead to distortion. This design enhances the overall reliability and fidelity, resulting in clearer and more accurate audio output.
• User-friendly control and premium components: NS-14G Pro offers adjustable frequency, volume, and gain controls of subwoofer, along with main volume, bass, and treble adjustments for versatile sound management. The incorporation of Rubycon filter capacitors, Siemens coupling capacitors, Taiwan fully enclosed potentiometer, full copper shielded inductors enhances sound quality, stability, and reliability, ultimately delivering superior performance and longevity.

• Brand: Douk Audio
• Model: NS-14G Pro
• Audio input: Stereo RCA/AUX/Bluetooth
• Audio output: Banana speaker jacks/AUX
• Chipset: TPA3255*2+QCC304X (supports aptX/aptX LL/aptX HD/SBC/AAC)
• Max output power: 300W*2 (L/R channel)+300W (subwoofer)
• Number of channels: 2.1
• Speaker impedance: 4-8Ω(L/R)    2-8Ω(subwoofer)
• THD+N: 0.01% (1kHz)
• SNR: ≥108dB
• Frequency response: 20Hz-20kHz
• Subwoofer gain: ±4dB
• Subwoofer cutoff frequency range: 50Hz-220Hz
• Bass/treble adjustment range: ±6dB
• AUX output level: 1.4V
• Input sensitivity: 2V
• Bluetooth max sampling rate: 48KHz/24bit
• Working voltage: DC 24-48V
• Dimensions (W*D*H): 155*125*42mm / 6.10*4.92*1.65in
• Package dimensions (W*D*H): 300*230*70mm / 11.81*9.06*2.76in
• Net weight: 768g / 1.69lb
• Package weight: 1.6kg / 3.53lb

User Manual of Douk Audio NS-14G PRO

Warm tips

The vice power socket is designed to provide extra power when needed, requiring a power supply of the same voltage. If using only one power supply, please connect it to the main power socket.