Featured Products

  • MC10H

    Marshall | 100 Watt, 18 Watt, 200 Watt, 50 Watt, JVM, MISC., VM100, VM50 | Choke

    10 Henry / 250mA Choke — 3-9/16″ Mounting Centers — DCR: Approx 275 Ohms

    $57

  • MAR100-C

    Marshall | 100 Watt, 50 Watt, JVM, MISC., VM50 | Choke

    3H — 250mA — 2 13/16″ Mounting Centers — DCR: Approx 92 Ohms

    For DSL/TSL 100 watt amps w/o a choke

    $57

All Results

  • Spec Sheet

    O50JM

    Marshall | 50 Watt | Output Transformer

    Plexi/JMP Era — Drake 784 139 — 3.3 kΩ primary, 4, 8, & 16 Ω taps

    For 2 x EL34’s — bolt hole spacing is 2 1/2″ x 2 1/2″ — replaces original OT !

    $271

  • M-CH

    Marshall | 100 Watt, 50 Watt, MISC. | Choke

    Late ’60s 100 watt — 3.8 Henry, 100 mA — 2 13/16″ mounting centers

    $57

  • O50JM-FS

    Marshall | 50 Watt | Output Transformer

    Plexi era — FatStack version for added low frequency extension and more clean headroom — Mounting Centers: 2-1/2″ X 3″

    $296
  • Spec Sheet

    O50JM-MM

    Marshall | 50 Watt | Output Transformer

    Plexi — for KT88 / 6550 (& 6L6) tubes — 5.9 kΩ primary

    Vertical mount, bolt hole spacing is 2 1/2″ x 2 1/2″

    $271
  • Spec Sheet

    O45RS-L

    Marshall, Radiospares | 45 Watt, 50 Watt, JTM45 | Output Transformer

    Leads (endbells available in most colors, including original vintage)

    $333
  • Spec Sheet

    P50JM-475-C

    Marshall | 50 Watt | Power Transformer

    360-0-360VAC unloaded B+ — 6.3V CT @ 7A — Added 13V @ 1.5A Accessory Winding — With Universal Voltage Primary

    $349
  • Spec Sheet

    P50JM-475

    Marshall | 50 Watt | Power Transformer

    Plexi — Approx 475VDC B+ —  360-0-360 unloaded B+ — 6.3V CT @ 7A — 120V, 230V and 240V Primary

    $333
  • Spec Sheet

    P4550JT-G2

    Marshall | 45 Watt, 50 Watt, JTM45 | Power Transformer

    JTM45 / Plexi 50 — Flat mount — Approx 420V B+ — 5V winding — With Lugs

    $333

  • MMC-3H

    Marshall | 100 Watt, 50 Watt, MISC. | Choke

    3.3H — 200mA — for ’73-’86 Era Marshalls — DCR: Approx 112 Ohms

    $57

  • OR-CH

    Orange | 100/120 Watt, 140 Watt, 50 Watt, MISC. | Choke

    Drop-in Upgrade!

    $57
  • Spec Sheet

    O45JT-16

    Marshall | 45 Watt, 50 Watt, JTM45 | Output Transformer

    JTM45 — 4, 8 & 16Ω taps

    $309
  • Spec Sheet

    O50-PLM

    Marshall | 50 Watt | Output Transformer

    6K primary

    $303
  • Spec Sheet

    P4550JT-G2M

    Marshall | 45 Watt, 50 Watt, JTM45 | Power Transformer

    JTM45 / Plexi 50 — flat mount — 460V B+ — 5V winding

    $333
  • Spec Sheet

    P4550JT-G4

    Marshall | 45 Watt, 50 Watt, JTM45 | Power Transformer

    JTM45 / Plexi 50 — flat mount — 380V B+ — 5V winding

    $333
  • Spec Sheet

    P4550JT-G1

    Marshall | 45 Watt, 50 Watt, JTM45 | Power Transformer

    JTM45 / Plexi 50 — flat mount — Approx 450VDC B+ — 5V winding

    $333
  • Spec Sheet

    O45RS-L-8-M

    Marshall, Radiospares | 45 Watt, 50 Watt, JTM45 | Output Transformer

    3.4K & 6.6K & 8K primary — 8Ω tap

    $352

  • P50JCM-M

    Marshall | 50 Watt | Power Transformer

    Plexi — 440V B+ with solid state rectification–5V winding

    $333

  • PARK75-O

    Marshall, Park | 50 Watt, 75 Watt | Output Transformer

    ’69-’70 Park — 75 watt

    $257

Not finding what you’re looking for? We are constantly adding new products to our catalog – for the most up-to-date information, please email or call us: 818-998-7791.

Mercury offers Transformer Restoration Services for rare and vintage transformers that are failing or underperforming. With our attention to detail you can be assured that your restored vintage transformer will look AND sound exactly as it did. For more info please email or call us: 818-998-7791 for a quote.