Marshall JTM 30* Guitar Amp Replacement Transformers


  • Physically, parts were designed to look similar to original factory units (where possible).
  • Material used & design specs. were kept as close as possible to the original part to preserve the stock “tone”.
  • See drawing for specifications and size.
  • Do you know of any models we don’t list? If so please contact us for information.
  • DISCLAIMER: * Hammond Mfg. or Digi-Key is not affiliated with Marshall Amplification. Amplifier model names are trademarks of the Amplifier companies and are just listed here for reference purpose only.

Power Transformer Domestic/International 120/240V, 50/60 Hz.

Part No. HM5048-ND (290QX)

Used in JTM 30 chassis:* JTM 30*

Marshall No:* Unknown
Core: Bobbin

Output Transformer - 8, 16 Ohms

Part No. HM4569-ND (1750NA)

Used in JTM 30 chassis:* JTM 30*

Marshall No:* Drake 292-772
Core: Bobbin

The TechForum Cross Reference category is for parts that Digi-Key does not sell or parts that have gone obsolete. Our Engineers and Techs have reviewed the specifications for these parts and made a recommendation for a replacement. Please review the suggested part to ensure it will work for your application.