Featured Products

  • FBFPP-X-U

    Fender | Princeton | Power Transformer

    Blackface — 50V bias tap — 360-0-360 unloaded B+ — Universal Voltage Primary

    Fatstack — 2 1/2″ lamination stack — ok to use with two 6L6 — hole spacing 2″ x 2 1/2″

    $265.00

  • MBRKII-P

    Mesa Boogie | Road King II | Power Transformer

    Road King II — 120V usage — FatStack Upgrade!

    $390.00

All Results

  • MBRK-P

    Mesa Boogie | Road King | Power Transformer

    MESA Part Number #561160 — 120V usage — FatStack Upgrade!

    $377.00

  • P-DELTAB-P

    Peavey | Delta Blues | Power Transformer

    Delta Blues — FatStack Upgrade!

    $201.00

  • P-DELTAB-P-U

    Peavey | Delta Blues | Power Transformer

    Delta Blues — FatStack Upgrade! — Universal Voltage Primary

    $234.00

  • P-CLASS20-P

    Peavey | Classic 20 | Power Transformer

    Classic 20 — #705-28733 — FatStack Upgrade, 1 7/16″ tall lamination stack

    Flat mount — bolt hole spacing is 1 3/4″ x 2 3/16″

    $189.00

  • P-CLASS20-P-240

    Peavey | Classic 20 | Power Transformer

    Classic 20 — 220V, 230V & 240V primary — FatStack Upgrade!

    $220.00
  • Spec Sheet

    EG-TWK-OS

    Egnater | Tweaker 15 | Output Transformer

    Tweaker 15 — 4, 8 & 16Ω taps — FatStack Upgrade!

    $214.00
  • Spec Sheet

    P-CLASS30-P

    Peavey | Classic 30 | Power Transformer

    Classic 30 — 1 1/2″ thick lamination FatStack Upgrade! — Single 120V Primary

    #705-28739 — flat mount, bolt hole spacing is 2″ x 2 1/2″

    $201.00

  • O18RS-FS

    Marshall, Radiospares | 18 Watt | Output Transformer

    FatStack with leads

    $339.00

  • JETC-20W-P

    Jet City | JET CITY 20 | Power Transformer

    Jet City 20 watt — Drop-in Upgrade! — FatStack with Universal Voltage Primary

    $246.00

  • O18RS-SS

    Marshall, Radiospares | 18 Watt | Output Transformer

    With lead wires — SuperStack (see FatStack) — Uses Grain-Oriented Iron

    $377.00

  • P-CLASS30-P-U

    Peavey | Classic 30 | Power Transformer

    Classic 30  — FatStack Upgrade! — Universal Voltage Primary

    $234.00

  • FMMB-PM

    Fender | Musicmaster Bass | Power Transformer

    Drop-in Upgrade! with a 2″ FatStack or iron! Dual B+ taps. Extra B+ tap is great for two 6L6 tubes.

    $201.00

  • FMMB-PM-240

    Fender | Musicmaster Bass | Power Transformer

    Drop-in Upgrade! with a 2″ FatStack or iron! Dual B+ taps. Extra B+ tap is great for two 6L6 tubes — 220V, 230V & 240V primary

    $246.00

  • FTDP-E-FS

    Fender | Deluxe (Tweed) | Power Transformer

    Tweed — FatStack — 100V, 120V, 220V, 230V & 240V primary — stock 380-0-380 unloaded B+

    $215.00
  • Spec Sheet

    JETC-20W-OC

    Jet City | JET CITY 20 | Output Transformer

    Jet City JCA20 — 8 & 16 Ohm taps — Oversized FatStack Upgrade! — Uses Grain-Oriented Iron

    $233.00
  • Spec Sheet

    FDP-20X

    Fender | Deluxe (Blackface/Silverface-Reverb) | Power Transformer

    Blackface Reverb — FatStack — higher B+ — great for use with two 6L6 / KT66 / EL34 type tubes

    $220.00

  • FDP-20X-E

    Fender | Deluxe (Blackface/Silverface-Reverb) | Power Transformer

    Blackface Reverb — FatStack — higher B+ — great for use with two 6L6 / KT66 / EL34 type tubes — Universal Voltage Primary

    $246.00

  • P-CLASS-VTX-HER-OM

    Peavey | Classic VTX Heritage | Output Transformer

    Classic VTX Heritage — 2 & 4Ω taps — FatStack Upgrade!

    $303.00

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.