Featured Products

  • Spec Sheet

    P18RS

    Marshall, Radiospares | 18 Watt | Power Transformer

    PT with Lug terminals like the original

    $296
  • Spec Sheet

    O45RS-L

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

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

    $333

All Results

Radiospares transformers – the legacy continues by our making available the original Marshall- and VOX-style Radiospares (AKA “RS”) transformer designs — some of the most unique and highest quality transformers ever made.

  • Spec Sheet

    O18RS-L

    Marshall, Radiospares | 18 Watt | Output Transformer

    Leads

    $320

  • O18RS-FS

    Marshall, Radiospares | 18 Watt | Output Transformer

    FatStack with leads

    $339

  • O18RS-SS

    Marshall, Radiospares | 18 Watt | Output Transformer

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

    $377
  • Spec Sheet

    O45RS-L-8-M

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

    3.4K & 6.6K & 8K primary — 8Ω tap

    $352
  • Spec Sheet

    O45RS-L-8-M

    VOX | AC30 | Output Transformer

    Rare — Found in early AC30s — 3.4K & 6.6K & 8K primary — 8Ω tap

    $352

  • RS-DELUXE-EL84-2X4

    Radiospares | 18 Watt, 20 Watt, 45 Watt | Output Transformer

    4K & 8K primaries — for use with two or four EL84s or 6V6s

    $314

  • RS-DELUXE-EL84-2X4

    Radiospares | 18 Watt, 20 Watt, 45 Watt | Output Transformer

    4K & 8K primaries — for use with two or four EL84s or 6V6s

    $314
  • Spec Sheet

    O45RS-L-16

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

    3.4k, 6.6k & 8k primary — 16Ω tap

    $358
  • Spec Sheet

    O45RS-L-16

    VOX | AC30 | Output Transformer

    Rare — Found in early AC30s — 3.4k, 6.6k & 8k primary — 16Ω tap

    $358

  • P45RS

    Radiospares | 45 Watt | Power Transformer

    As used on JTM45 — 350V – 0 – 350V B+ with dual 6.3VCT winds and a 5V filament winding.

    $359

  • P45RS

    Radiospares | 45 Watt | Power Transformer

    JTM45 – Lower B+ — 350V – 0 – 350V B+ with dual 6.3VCT winds and a 5V filament winding.

    $359

  • P18RS-M

    Marshall, Radiospares | 18 Watt | Power Transformer

    Lower B+

    $314

  • O100RS-LM

    Marshall, Radiospares | 100 Watt | Output Transformer

    2.1K & 3.3K primary — 8 & 16Ω taps

    $472
  • Spec Sheet

    O45RS-L-16-M

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

    3.4K & 6.6K primary — 16Ω tap

    $352
  • Spec Sheet

    O45RS-L-16-M

    VOX | AC30 | Output Transformer

    Rare — Found in early AC30s — 3.4K & 6.6K primary — 16Ω tap

    $352

  • P18RS-SL

    Marshall, Radiospares | 18 Watt | Power Transformer

    Leads with short stack

    $303

  • O100RS-L

    Marshall, Radiospares | 100 Watt | Output Transformer

    Single 16Ω secondary tap

    $440

  • O20RS-FS

    Marshall, Radiospares | 20 Watt | Output Transformer

    FatStack with leads

    $339

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.