PA774 240v / 120v EXPORT Dynaco Replacement ST35/SCA35 Power Transformer. Direct replacement for PB-028. Can be wired for either 120v or 240v. For the connection diagram for this unit Click Here PB-028$78.85 Triode, USA For Customer Service, Questions, Shipping, Ordering, etc., M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com TECH SUPPORT is available 4 days per week: 9 AM to 4 PM CT Monday, Tuesday, Thursday & Friday Ph 1-800-774-3201 Or email: tech@triodestore.com