After more than 30 years, the Holy Grail of wah components, the Fasel inductor is back. These legendary inductors are the key to expressive, vocal quality of the classic Wahs. This Wah faithfully recreates the vowel-like sweep and lush harmonic sparkle heard on so many time- less recordings. Sometimes only an original will do. True hardwire bypass. Powered by 9 volt battery or AC adaptor (ECB003).