This Electro-Harmonix 12 VDC USA Power Adapter provides power to your Tube Zipper, The Wiggler, Black Finger, English Muff'n, Tube EQ, or 12AY7 Mic Preamp pedal, as well as the discontinued LPB 2UBE or Classic Hot Tubes. It is an exact match for the original power supply that came with your device. This USA power adapter supports input power up to 120 VAC at 60 Hz and outputs 12 VDC at 1A. Keep this power adapter on hand as a spare to limit downtime if your original should fail or become lost.