Why Select Hammond Transformers
Why Hammond Transformers? The Gold Standard in Valve Amps
Discover why guitar amp builders, repair techs, and audiophiles worldwide trust Hammond Manufacturing for replacement power transformers, output transformers, and chokes.
Built for Performance, Reliability & Vintage Tone
For over a century, Hammond Manufacturing has engineered premium magnetic components. Whether you're repairing a classic vintage Fender, restoring a high-gain Marshall, or building a custom boutique amp, Hammond delivers exact drop-in replacements with modern safety standards.
1. Heritage & Precision Engineering
Founded in 1917, Hammond brings over 100 years of magnetics design experience. Every transformer is manufactured using high-grade silicon steel laminations and precision copper windings for maximum efficiency and minimal thermal drift.
2. True Classic "Drop-In" Replacements
Hammond's 290 Series (Power) and 1750 Series (Output) are designed specifically to match original vintage chassis mounting holes, wire color codes, and electrical specifications for Fender, Marshall, Vox, and Gibson amps.
3. Australian Mains Voltage Compatibility (240V)
Importing US vintage amps often means dealing with 120V mains issues. Hammond's universal and 240V primary options allow seamless operation on Australian power grids without needing messy step-down transformers.
4. Extended Frequency Response & Fidelity
Hammond output transformers utilize interleaved windings to expand frequency response (20Hz to 20kHz ±1dB on Hi-Fi series), delivering tight, punchy low-end and sweet, un-harsh high frequencies.
Classic Engineering & Precision Construction
Rugged end-bell enclosures, vacuum-impregnated varnish, and heavy-gauge mounting hardware guarantee whisper-quiet operation and long life.
Hammond 290 Series: Exact drop-in replacement power transformer with rugged end bells.
Quick Hammond Series Selection Guide
Select your build type or amplifier brand to identify the right Hammond product series in our stock.
Hammond Product Line Overview
| Hammond Series | Type | Key Technical Benefit | Ideal For |
|---|---|---|---|
| 290 Series | Power Transformers | Exact bolt-hole matching & 240V primary taps for Australia. | Fender, Marshall, Vox, Gibson exact restorations. |
| 1750 / 1760 Series | Output Transformers | Precision multi-impedance secondary taps (4, 8, 16 Ω). | Replacing blown or tone-lacking stock output transformers. |
| 125 Series | Universal Output | Multi-tap primary and secondary for easy impedance matching. | Prototyping, custom single-ended or push-pull builds. |
| 153 - 159 Series | Filter Chokes | High inductance (3H to 15H) with low DC resistance. | Power supply ripple hum removal & screen stabilization. |
| 1608 - 1650 Series | Hi-Fi Output | Ultra-wide frequency response (20Hz - 20kHz ±1dB). | Audiophile valve stereo power amplifiers. |
