All Results

  • FBPO-15S

    Fender | Princeton | Output Transformer

    Brown — single ended — 8Ω tap

    $144

  • SIL-1457-P

    Silvertone | 1449, 1457 | Power Transformer

    Sears Silvertone — PT for models 1457 and 1449

    $177

  • O100JM-CUSTOM

    Marshall | 100 Watt | Output Transformer

    4, 8 & 16Ω taps — 2.5″ stack — 3K primary

    $421

  • BH5H-KIT

    Blackheart | BH5 Little Giant | KIT

    Complete upgrade kit for your Blackheart Little Giant amp head (BH5H) or combo (BH5-112). Our XLG Upgrade Kit requires only a transformer swap, and a few minor circuit board modifications. You can do it yourself, or we can refer you to an amp tech who can make the upgrade for you.

    For our other Blackheart Little Giant Kit, see our Mean 13 kit.

    Included in the kit:
    -Axiom Power Transformer
    -Axiom Output Transformer (4, 8, 16 Ohm Taps)
    -Axiom Mini-Choke™
    -Other parts necessary to make the upgrade
    -Fully illustrated step-by-step color manual, with wiring schematics and instructions

    Available in 120V only. At this time export versions are not available. Amplifier not included

    $373

    Discontinued.

  • M-DSL401-O

    Marshall | DSL401 | Output Transformer

    Upgrade! — TXOP 00012 — Bolt hole spacing is 2″ x 2 1/2″

    $239

  • M-100-100-P

    Marshall | 100 Watt, MISC. | Power Transformer

    100/100 — EL34 or 5881 Dual Monoblock power amp PT — Drop-in Upgrade!

    Flat mount w/ lugs — 2 1/2″ x 3 1/8″ mounting centers

    $303

  • MAR-VM100-OS

    Marshall | 100 Watt, VM100 | Output Transformer

    Vintage Modern 100W — Upgrade! For use with four 6L6/5881/KT66/6550/KT88 type tubes

    $371

  • SE-4K

    Mercury | MISC. | Output Transformer

    Single ended — 4K primary — 8Ω secondary

    $132

  • FC4-HP

    Fender | MISC., Twin | Choke

    4 Henry. Uses Grain-Oriented Iron

    $101

  • MM-6H-CH

    Mercury | MISC. | Choke

    6 Henry Mini-Choke

    $57

  • MC25-H

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

    25 Henry choke

    $57

  • MAR-9005-P

    Marshall | 100 Watt, 50 Watt, MISC. | Power Transformer

    9005 50/50 — Rack mount power amp — #1204-314 — Upgrade!

    $459

  • FM45-P

    Mercury | MISC. | Power Transformer

    Universal dual primary — 290-0-290 unloaded B+ — 70V bias winding — 7 amp center tap — 6.3V filament winding — 4A-5V winding — 8087 size

    $296

  • SE-25-PM

    Mercury | MISC. | Power Transformer

    Custom designed — 25 watt — 220-0-220 unloaded B+

    $189

  • M-DSL201-O

    Marshall | DSL201 | Output Transformer

    DSL201 contact us for correct mounting — Upgrade!

    $182

  • MEAN13-KIT

    Blackheart | BH5 Little Giant | KIT

    The Mean 13 High-Power Upgrade requires a radical modification of the Little Giant’s circuit board and chassis — including the addition of twin-6V6 sockets and its full-custom transformers and choke.

    Everything you need to transform your Little Giant head (BH5H) or combo (BH5-112) into a 13 Watt monster. Mercury’s kit includes detailed step-by-step, full color illustrations, schematics and photographs to help guide you through the process (tubes not included).

    For our other Blackheart Little Giant Kit, see our XLG kit.

    Available in 120V only. At this time export versions are not available. Amplifier not included.

    $456

    Discontinued.

  • O100JM-S

    Marshall | 100 Watt | Output Transformer

    4, 8 & 16Ω taps — 2″ stack

    $396

  • MMO-100ME

    Marshall | 100 Watt | Output Transformer

    Optimized for 6L6 / KT88 / 6550 tubes — 2, 4, 8 & 16Ω taps — 1.5″ stack — Uses Grain-Oriented Iron

    $377

  • M-TSL-100COMBO-P

    Marshall | JCM2000 | Power Transformer

    JCM2000 TSL 122 Combo — Drop-in Upgrade!

    $359

  • MMO-50-100C

    Marshall | 100 Watt | Output Transformer

    Use with higher gain amp — 2, 4, 8 & 16Ω taps

    $371

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.