T POWER Ac Dc Adapter Charger Compatible with (5v) Nobsound NS-08E NS-10P Vacuum Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp T-Power (TM) Made with the highest quality (( Extra Long 6.6ft cable cord )) Total Cord Length Is Extended to 6.6 ft Brand-new Input Voltage Range: AC 100V - 240V ( 12v ) CE/FCC/RoHS certified Compatible with : Nobsound NS-08E NS08E NS-08 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp Nobsound NS-10P NS-10 , NS10P Mini Vacuum Tube Preamp Audio Hi-Fi Stereo Pre-amplifier Treble & Bass Control