Warm tips: 1. This is latest updated version, simplify the circuit, upgrade the components and greatly improve the sound quality. 2. We provide two versions: mono subwoofer verison / mono full-range version, please choose correct version before placing order. And want stereo output please buy 2PCS or 3PCS. Features Adopting classical TPA3116 amp IC, class D amplification, max output power can reach 100W(4Ω load), easily to drive most passive subwoofers / full-range speakers and match perfectly with them. With 3.5mm AUX audio input, perfectly compatible with many audio devices such as phone,TV, MP3, CD players, computers, amplifier etc.. With built-in preamplification circuit, can match well with the audio sources that with low signal output. Reasonable circuit, concise wiring layout and perfect protection, no sparks no shock. Adopting NE5532 op amp with ultra-low distortion, the sound is very smooth and natural, powerful in low frequency and delicate in high frequency, full of music styles. Mini size with exquisite appearance, aluminum alloy black case looks fashionable and attractive. With strong output power and high-quality sound, especially designed for the customers who pursue HiFi sound. Parameters Brand: Nobsound Model: NS-03G SUB (subwoofer version) / NS-03G FR (full-frequency version) Audio input: 3.5mm AUX Audio ouput: banana speaker jacks Number of channel: mono Chip: TPA3116D2 OP amp: NE5532 Max. output power: 100W Frequency range: 20Hz-180Hz (SUB version) / 20Hz-20KHz (FR version) THD: ≤ 0.01% SNR: ≥ 118dB Input sensitivity: ≤ 280mV Matched speaker impedance: 4-8Ω Working voltage: DC 12V-24V Dimensions(W*D*H): 69*88*33mm / 2.72*3.46*1.30in Package dimensions(W*D*H): 150*150*50mm / 5.91*5.91*1.97in Net weight: 190g / 0.42lb Package weight: 610g / 1.34lb Packing List 1× NS-03G Amplifier 1× 19V Power Supply( Optional ) 1× User Manual Subwoofer Version Full Frequency Version

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