Product: Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp 100W PBTL BTL Bridge Home Theater
Brand: Douk Audio
Features:
 A WORKING MODE SWITCHER: convenient to use it as subwoofer bass amplifier or full frequency amp, and you can use two Nobsound G2 to drive left and right channel independently, and the mutual interference between the channels is suppressed. 
 GAIN CONTROL: a gain switch on the bottom of the amplifier to allow 4-level of output level setting (20/26/32/36 dB), to keep the sound quality better and not affected by the the resistor part. 
 HIGH-END MATERIALS AND LARGE POWER: Texas Instruments TPA3116 chip, NE5532 op-amp to guarantee no audible noise, 100Wx 1 mono channel amp can drive most home passive speaker or subwoofer, bringing HiFi listening experience. 
 EXCELLENT CORCUIT AND APPEARANCE DESGIN: built-in speakers protection circuit, solid aluminum chassis for long time use; built-in low pass filter for subwoofers with sub frequency control, small simple compact design but practical and powerful. 
 
 Specifications: 
 Max power: 100W @2Ω ; 70W @4Ω ; 50W @8Ω
 Full frequency response: 20Hz-20kHz(±3dB) 
 The speaker matches the impedance: 2-8Ω
 THD: Output 1W@ 0.03%
 Working voltage: DC12-24V
 SNR: ≥106dB
 Input sensitivity: 0.775V
 Dimensions (D*W*H): 118.5*98*33 mm / 4.65*3.74*1.30 in
 Package size (D*W*H): 257*215*65 mm / 10.12*8.46*2.56 in
 Bass cutoff frequency range adjustment: 40-300Hz
 Net weight: 305 g / 0.67 lb
 Package weight: 445 g / 0.98 lb
 Slope of bass attenuation: -12dB Slope
Power Supply: 19V 4.74A
 
 Packing List:
 1× Power Amplifier
 1× Power Supply

G2 can be used as a sub amp or a mono channel amp. It has a mode switcher which can change between SUB and PBLT modes conveniently. Equipped with 19V 4.74A high quality power supply.
Applications: ① G2 can be used as a subwoofer power amplifier for passive subwoofers; ② G2 can be used as a mono amp to drive single channel. You can use two G2 to drive left and right channel separately, which are known as PBLT / BTL Bridge amp. Compared with normal 2.0CH amps, it can ensure totally no interference between two channels and can provide higher power.
It has a gain setting which allows 4-level of output level setting (20/26/32/36 dB). It can keep the purity of the sound and avoid the resistor influence. Besides, it also has a bass cutoff frequency control knob.
It adopts TI TPA3116 and NE5532 op-amp, which can offer 100W high power and can drive most home sub and mono speakers. Its optimized circuit can ensure totally no background noise. Besides, it also built-in speaker protection circuit and low pass bass filter.
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