For the hookup sheet for this unit please click here For the hookup sheet for this unit please click here P782 S replacement power transformer for Dynaco (tm) Mark 3 and Mark 2 amplifiers. Bolts directly on without modifications. Also a bolton replacement for 60 watt (2 6550's or KT88's) Sunn amps that have Dynaco transformers (this should be printed on the transformer cover...some Sunns use Schumacher transformers, those have "606" code stamped on the transformer). Rated 400-0-400V (800VCT) at 200 ma (actually, will deliver up to 300 ma continuous, albeit at a slightly lower voltage) , 5V at 3A, 6.3VCT at 5A, also has 60V bias tap. Primary 117VAC 60 Hz. Transformer dimensions are 4 3/4 inches high X 3 3/4 wide X 3 3/4 inches deep over the covers, mounting hole centers are 2 7/8 inchs X 3 inches. Brand new production, in stock, and made right here in Chicago, USA. PLEASE NOTE: INK STAMP IS NOW LOCATED ON THE BOTTOM OF THE TRANSFORMER INSTEAD OF ON THE BELL Using the P782 to replace power transformers in other amps...this is possible, as there are many other amps that put out 50 to 70W from a pair of 6550's or EL34's, however, in most cases, the mounting is different, so a bit of drilling will usually be required. Note that this transformer used with 5AR4's will put out over 500V, with solid state rectifiers, filter capacitor rating of at least 600V (or 2 300V in series,) is required. It may be possible to use these on Ampeg & Traynor amps that need about 525V of DC. Sunn Replacement Part# 3-6PT WIRING DIAGRAM p782s$399.95 END BELL COVER REPLACEMENT A431 P782 P782EXP - ALSO FOR UPRIGHT MOUNTING OF PA060/PA521 endbella431p782 Triode, USA Customer Service M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com