Hammond 290LEX Multi-Voltage JMT 45 Marshall Power Transformer

The 290LEX is a Hammond 290 Series power transformer described on its part page as a replacement for a Marshall guitar amp, with JMT 45 given as the amp model reference. In the series ordering table it appears in the Fender section as a GENERIC listing, so it is a useful option for techs and builders who need its specific combination of windings.

Its primary is rated 100/120/220/230/240 VAC 50/60 Hz. Secondaries are 690VCT @ 200 mA for the high-voltage supply, a 6.3Vct @ 5A heater winding and a 5V @ 3A winding. The ordering table lists bobbin winding.

Hammond designed the 290 Series for drop-in replacement of original units, with parts made to look similar to the original factory transformers where possible and materials and design specs kept as close as possible to the original part to preserve the stock tone.

The five-tap primary lets one part be wired for supplies from 100V to 240V, useful for techs who service amps from several markets.

The 290LEX ships at 7.25 lbs (3.29 kg). It is RoHS and REACH compliant and identified by UPC 623980284354 and UNSPSC 39121301. Amp model references are for reference only; confirm your amp's requirements before ordering.