DoukAudio 2.1 Channel Bluetooth Amplifier: 600W Stereo + 300W Subwoofer Output Bass & Treble Control for Home Theater | Dual TPA3255 aptX-HD | Living Room Desktop | Audiophiles Holiday (NS-14G-PRO)

Parameters 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 channel: 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 Packing list 1* NS-14G Pro Power Amplifier 1* DC 48V/5A Power Adapter 1* Bluetooth Antenna

• 2.1 Bluetooth Amplifier — Dedicated L/R channels plus a true sub channel deliver room-filling stereo with deep low end. Bluetooth 5.0 with aptX-HD/AAC gives stable, near-lossless wireless from phones, tablets, and laptops.
• 600W System Power — Up to 300W×2 for L/R and 300W for the sub to drive bookshelf or floorstanding speakers with headroom. Includes a 48V/5A adapter; supports DC 24–48V for flexible power and stronger dynamics.
• Subwoofer Output — Dial in tight, seamless bass using the variable crossover (50–220Hz) and ±4dB sub gain. Blend your sub with mains to avoid muddy mids and get punch for movies, music, and gaming.
• Dual TPA3255 — High-efficiency Class-D power with low distortion (0.01% THD at 1kHz) and ≥108dB SNR for clean transients and black backgrounds. Three-sided ventilation and dual power sockets enhance reliability.
• Bass & Treble Control — ±6dB tonal shaping lets you tame bright recordings or add warmth at low volumes. Premium caps, enclosed Taiwan pots, and copper-shielded inductors ensure clarity and durability.