
Hammond 290SX Tonemaster & Vibro King Multi-Voltage Power Transformer
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Create Free Business AccountKey Features
- Listed for Fender TONEMASTER and VIBRO KING (ref. P/N 26554)
- Multi-tap primary: 120/230/240V @ 50/60 Hz
- 337Vct @ 1.1A high voltage secondary
- 54V @ 250 mA and 6.4V @ 3A secondaries
- Bobbin winding
- Drop in replacement designed to resemble the factory unit
- 15 lbs (6.80 kg) shipping weight; RoHS and REACH compliant
The 290SX is a 290 Series tube guitar amplifier power transformer listed as a replacement for the Fender TONEMASTER, and also shown in the series ordering table for the VIBRO KING (similar amp P/N 26554, reference only). It suits technicians servicing these amps who want a transformer that can be set up for more than one mains voltage.
The part page and ordering table give the primary as 120/230/240V @ 50/60 Hz, while the manufacturer's short description reads 100V/120V/240V. The secondaries are 337Vct @ 1.1A (Secondary 1), 54V @ 250 mA (Secondary 3) and 6.4V @ 3A (Secondary 4). The winding is listed as bobbin.
Like all 290 Series parts, the 290SX was designed for drop in replacement of the original unit, to look similar to the original factory transformer where possible, and with materials and design specs kept as close as possible to the original to preserve the stock tone.
Shipping weight is 15 lbs (6.80 kg). The 290SX is RoHS and REACH compliant, with UPC 623980252636 and UNSPSC 39121301. Because the amp references are provided for reference only, compare the listed secondary ratings with your existing transformer before installing.
Ideal For
- Fender TONEMASTER power transformer replacement
- Fender VIBRO KING power transformer replacement
- Multi-voltage tube amp mains transformer
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers, Replacement & Upgrades) |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | 100V/120V/240V |
Electrical
| Secondary 1 | 337Vct @ 1.1A |
| Secondary 3 | 54V @ 250 mA |
| Secondary 4 | 6.4V @ 3A |
| Primary Volts | 120/230/240V @ 50/60 Hz |
Identifiers
| UPC | 623980252636 |
| UNSPSC | 39121301 |
Amplifier Reference
| Amp Manufacturer | Fender |
| Amp Model (Ref. Only) | TONEMASTER* |
| Also Listed For (Ref. Only) | VIBRO KING* |
| Similar Amp P/N's (Ref. Only) | 26554 |
Packaging & Shipping
| Shipping Weight | 15 lbs (6.80 kg) |
Construction & Finish
| Winding | Bobbin |
| Appearance | Designed to look similar to original factory units (where possible) |
| Design Intent | Designed for drop in replacement of original units |
| Materials & Design Specs | Kept as close as possible to the original part to preserve the stock "tone" |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What amps is the 290SX listed for?▾
The Fender TONEMASTER and VIBRO KING, with similar amp P/N 26554. These references are for reference only.
What primary voltages does the 290SX support?▾
The part page lists 120/230/240V @ 50/60 Hz. The short description reads 100V/120V/240V.
What are the secondary ratings?▾
337Vct @ 1.1A, 54V @ 250 mA and 6.4V @ 3A.
What winding type is the 290SX?▾
It is listed as a bobbin winding.
What does the 290SX weigh?▾
Shipping weight is 15 lbs (6.80 kg).


