47 Amp DIY NE5532 Hi-Fi Headphone Amplifier Kit with Transparent Housing DC9V-18V

Features: Adopt NE5532 operational amplifier. Play with good sound quality. Wide range for input voltage: DC9V-18V. Standard 3.5mm audio input/output interface. With rotating knob for volume adjustment. Components can be well protected by the transparent housing. Discounted at only: US$ 7.7