MADE IN USA 240 vac 50/60 hz primary, secondary 360-0-360 @ 300 ma, 55 volt bias tap, (2) 6.3 volt @ 5 amp taps and (1) 5 volt @ 4 amp tap. Bolts in to ST70. No modifications required. Extra long telfon insulated leads. pa521$429.95 Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com