Marshall JTM 45 & 50W Plexi 40-18054

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  • Item #: 40-18054

Vintage Constructed Amplifier Transformers by Magnetic Components, Inc.

Vintage Spec, Paper Wound!
Replacement Tube Amp Transformer
Proudly manufactured in the U.S.A.

Our Part# Style Series Type Wattage Mains Voltage
40-18054 Marshall Plus Power 45W / 50W 100/120/220/240


Alternates: n/a
Reference#: 1202-55, 1202-118 
Used In: JTM 45**, JTM 50** and 50W Plexi JMPs**
Description: Great vintage era type constructed, paper layer wound power transformer for JTM45**, JTM50** and 50W Plexi** "type" amplifiers requiring laydown style mountings (a.k.a flat mounted)! The multi-national primary voltages of 100V, 120V, 220V & 240V are featured here. This is a great upgrade transformer featuring the highest performance and coolest running M-6 steel lamination. This also features B+ ratings appropriate for both solid state and tube rectification applications. This also features a bias tap for extra versatility. This power transformer covers most 45W and 50W Marshall style applications of the 1960's era. Also, this is a great laydown type power transformer for use in 50W or "so" DIY amp projects and new OEM builds.
Click Here for Specifications and Hook-up Diagram
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General Features:
  • Paper layer wound like the vintage era originals
  • Made in USA by Magnetic Components, Inc.
  • Manufactured using proper construction methods
  • Made with premium materials
  • Proper mountings / No chassis drilling required on most
  • Made with pre-tinned "Topcoat" PVC appliance wire for soldering ease
  • RoHS Compliant
  • Two exclusive series: ClassicTone Vintage and ClassicTone Plus
The Vintage Series offers Fender* and Marshall* type amplifier transformers made with true-to-original specifications, vintage era construction methods and high quality materials. This series features correct mountings and requires no chassis hole drilling!
The Plus Series offers Fender* and Marshall* type amplifier transformers for general replacement, upgrades and additional features such as international voltage taps. These are still manufactured using the same fine construction methods and premium materials as our Vintage series transformers.
These may require chassis modifications...see specifications for details.

Quantity Discounts are Available. Contact Sales for additional information.


Return Policy
Because these are electronic components, returns are only accepted on Damaged, DOA or Unused units only.
Return shipping costs are the responsiblity of the purchaser.
Prior approval is required for all returns. Contact Sales for an RMA Number.
Returns are subject to a restocking fee equal to any Credit Card, eBay or Paypal fees associated with the original transaction.


*Disclaimer: Magnetic Components, Inc. is not affiliated with Fender Musical Instruments Corp. and Marshall Amplification.
**All of the above listed amplifier models are trademarks of Fender Musical Instrument Corp. or Marshall Amplification.


Price $115.69
Availability Out-of-Stock