Save $$$. This is a brand new Edcor transformer in it's original box. Edcor makes some of the best transformers! This would make an excellent replacement for your tube guitar or audio amplifier. The primary leads are 120v and the secondaries are 600v center tap 300v - 300v @250ma and 6.3v @ 4amp. The dimensions are; 4 - 5/8"H X 3 - 3/4"W X 3 - 7/8"D. Check Edcor's site below. $39.95
http://www.edcorusa.com/products/transformers/xpwr/xpwr108.html
http://www.edcorusa.com/products/transformers/xpwr/xpwr108.html