Hammond 290GZ Lay-Down Power Transformer for JCM 800 50W Amps
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Create Free Business AccountKey Features
- Replacement power transformer for the JCM 800 50 Watt guitar amp chassis
- Z style "lay down" mounting, suitable for most JCM 50 Watt kits
- Domestic/international primary: 120/220/240V, 50/60 Hz
- Bobbin core construction
- Designed to look similar to the original factory unit where possible
- Materials and design kept close to the original to preserve stock tone
- RoHS and REACH compliant; 8.7 lbs (3.95 kg) shipping weight
The 290GZ is a replacement power transformer for the Marshall* JCM 800 50 Watt guitar amplifier chassis. It is the Z style "lay down" version, which the manufacturer describes as suitable for most JCM 50 Watt kits, making it a practical choice for amp technicians restoring a vintage head and for builders assembling a JCM-style 50 Watt kit.
The primary is set up for domestic and international service at 120, 220 or 240 V, 50/60 Hz, so the same transformer can be used on mains supplies in different regions. It is built on a bobbin core.
Like the other parts in this JCM 800 replacement group, the 290GZ was designed to look similar to the original factory unit where possible, and its materials and design specifications were kept as close as possible to the original part to preserve the stock tone. The original Marshall* part number is listed as unknown, so refer to the manufacturer's drawing for detailed specifications and size before fitting.
The 290GZ ships at 8.7 lbs (3.95 kg) and is RoHS and REACH compliant. If you need the vertical-mount version for the same chassis, the series also lists an X style part. Hammond Mfg. is not affiliated with Marshall Amplification; amplifier model names are trademarks of their owners and are listed for reference only.
Ideal For
- Replacing the power transformer in a JCM 800 50 Watt head
- Building a JCM-style 50 Watt amplifier kit
- Converting a 50 Watt amp for 120, 220 or 240V mains
- Vintage tube guitar amp restoration
Overview
| Product Type | Power Transformer |
| Mounting Style | Z style "lay down" (suitable for most JCM 50 Watt kits) |
| Short Description | POWER TRANS |
| Amplifier Application | Marshall* JCM 800 - 50 Watt chassis |
| Original Marshall* Part No. | Unknown |
Electrical
| Frequency | 50/60 Hz |
| Primary Voltage | 120/220/240V (Domestic/International) |
Identifiers
| UPC | 623980474717 |
| UNSPSC | 39121301 |
Packaging & Shipping
| Shipping Weight | 8.7 lbs (3.95 kg) |
Construction & Finish
| Core | Bobbin |
| Design | Designed to look similar to the original factory unit (where possible) |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
Which amplifier is the 290GZ made for?▾
It is listed as a replacement power transformer for the Marshall* JCM 800 - 50 Watt chassis.
What is the difference between the 290GZ and the X style version?▾
The 290GZ is the Z style "lay down" transformer, described as suitable for most JCM 50 Watt kits. The X style part in the same series is the "vertical mount" version.
Can the 290GZ be used outside North America?▾
Its primary is rated for domestic/international use at 120/220/240V, 50/60 Hz.
What does the 290GZ weigh?▾
The shipping weight is 8.7 lbs (3.95 kg).
Is the 290GZ RoHS compliant?▾
Yes. It is listed as both RoHS and REACH compliant.
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