TPA3116 D2 80W+80W+100W 2.1 Channel digital Power Amplifier Board Bass Subwoofer Treble Bass Regulating Ne5532 Pre amplifier

DollaTek TPA3116 D2 80W+80W+100W 2.1 Channel digital Power Amplifier Board Bass Subwoofer Treble Bass Regulating Ne5532 Pre amplifier

DollaTek Mini 2.0 Hi-fi Electronic Stereo Audio Assembled Amplifier Portable AMP 10W+10W 2 Channel Class-D DC 12V Digital Booster Amplifier Board Module for CD MP3 MP4 PC Speaker

DollaTek Preamp Tone Board Volume Treble HIFI Bass Adjustment Control Board