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Tube amp Transformers


Information

Go to this page for
Transformer hookup diagrams, spec's, technical info and weights for the transformers on this page
Go to this page for Marshall power switch hookup diagrams.
Note: My distributor only carries 120Vac primaries on most Fender power transformers.

Chokes


Small Fender choke

Small Fender style choke
50ma DC - 4 Henry
Used in BF/SF Deluxe's, Deluxe reverbs and Vibrolux reverbs
Part number 125C3A.
Fender Transformer Diagrams Link

Price each = $18.00

Customer Ratings Customer Ratings

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Large Fender choke

Large Fender style choke
90ma DC - 4 Henry
Used in all the larger fenders, Super reverbs, Twin reverbs,
Bandmasters, tweed Bassman's, Bassman heads
Part number 125C1A
Fender Transformer Diagrams Link

Price each = $19.00

Customer Ratings Customer Ratings

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Reverb transformer Fender

Reverb output transformer for Fender combos.
Used on all reverb heads and combos.
Part number 022921.
Fender Transformer Diagrams Link

Price each = $18.00

Customer Ratings Customer Ratings

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Heyboer Reverb unit Power transformer

Heyboer 6G15 Reverb, Re-Vibe and Pre-amp power transformer
Used to build model 6G15 stand alone reverbs, Re-Vibe's and pre-amps.
Uses a bridge rectifier.
Go here to see how to hook up the rectifier.
This model is for stand up type surface mounting
It has 100, 120, 220 and 240 Volt export primaries.
Part number is MOJO 779
Price each = $50.76

Customer Ratings Customer Ratings

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Heyboer Output for Champ and Reverb units

Heyboer Output Transformer for Champs and small single ended amps
Also used on Stand alone reverb units using the 8 ohm tap to drive the reverb tank
4 ohm and 8 ohm secondary taps
Part number Mojo771
Fender Transformer Diagrams Link

Price each = $29.48

Customer Ratings Customer Ratings

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Heyboer Output for Tweed Champ

Heyboer Output Transformer for Tweed Champs and small single ended amps
4 ohm secondary tap
Part number Mojo771nos
Fender Transformer Diagrams Link

Price each = $27.19

Customer Ratings Customer Ratings

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Output for Champ

Output Transformer for Champs and small single ended amps
Part number 022905
Fender Transformer Diagrams Link

Price each = $26.00

Customer Ratings Customer Ratings

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Heyboer Power for Tweed Champ

Lower Voltages for tweed era amps.
One 6V6 power tube
Part number Mojo759
Fender Transformer Diagrams Link

Price each = $61.60

Customer Ratings Customer Ratings

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Output for Princeton

Output for Princeton's
12 watts, 8 ohm secondary.
Two 6V6 power tubes
Part number 022913
Fender Transformer Diagrams Link

Price each = $44.00

Customer Ratings Customer Ratings

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Power for BF/SF Champ - Princeton

Power transformer for BF/SF Fender Champs, Princeton's, Bronco's and Harvard's.
One or two 6V6 power tubes
Part number 125P1B.
Fender Transformer Diagrams Link

Price each = $65.00

Customer Ratings Customer Ratings

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Output for Deluxe

Output for Tweed Deluxe and Deluxe Reverb
25 watts, 8 ohm secondary.
Two 6V6 power tubes.
Part number 041318.
Fender Transformer Diagrams Link

Price each = $50.00

Customer Ratings Customer Ratings

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Heyboer Output for Deluxe

Heyboer Deluxe and Tweed deluxe Output Transformer
4-8-16 ohm Secondary
25 watts, 4-8-16 ohm secondary.
Two 6V6 power tubes.
Part number Mojo768sp
Fender Transformer Diagrams Link

Price each = $56.65

Customer Ratings Customer Ratings

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Power for Deluxe

Power transformer for BF/SF Fender Deluxe and Deluxe Reverbs.
Two 6V6 power tubes
Part number 041316.
Fender Transformer Diagrams Link

Price each = $75.00

Customer Ratings Customer Ratings

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Output for Pro Vibrolux reverb

Output for Pro Reverb, Vibrolux Reverb, Tremolux
35 watts, 4 ohm.
Two 6L6 power tubes
Part number 022848
Fender Transformer Diagrams Link

Price each = $45.00

Customer Ratings Customer Ratings

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Output for Super reverb

Output for Super Reverb, Tweed Bassman
50 watts, 2 Ohm.
Two 6L6 power tubes
Part number 022855
Fender Transformer Diagrams Link

Price each = $85.00

Customer Ratings Customer Ratings

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40 watt 2 6l6 2-4-8 ohm output

Output for Super Reverb, Tweed Bassman, Bassman heads
50 watts with 2, 4 and 8 ohm secondary taps. Great upgrade for Pro Reverb, Bandmasters, etc.
This is the transformer that is being used to make Vibroverb's out of Bandmaster reverb heads.
Note: This transformer is physically larger than a pro reverb or bandmaster output.
If you are upgrading, you will probably have to drill some new mounting holes.
Two 6L6 power tubes
Part number 018343
Fender Transformer Diagrams Link

Price each = $80.00

Customer Ratings Customer Ratings

Sorry, this item is out of stock.

Heyboer Power for Bassman-Super reverb

Heyboer Black Face Bassman, Super Reverb, Vibroverb, Pro, Super Reverb Power Transformer
You can use this transformer for many 40 wattish type amplifiers
Transformer Specs and Diagrams Link

Price each = $82.94

Customer Ratings Customer Ratings

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Output for Twin reverb

Output for Twin Reverb, Dual Showman
100 watts, 4 ohm.
Four 6L6 power tubes
Part number 022899
Fender Transformer Diagrams Link

Price each = $80.00

Customer Ratings Customer Ratings

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Power for Twin reverb

Power transformer for BF/SF Fender Twin Reverb, Showman, Dual Showman.
Fits most all of the 4 power tube fender amplifiers.
Four 6L6 power tubes
Part number 022756
Fender Transformer Diagrams Link

Price each = $110.00

Customer Ratings Customer Ratings

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Heyboer 18 watt Output transformer

Heyboer 18 Watt output tranny
Used to build Marshall 18 Watt Heads and Combo clones.
Open frame construction, no Endbell covers.
It has 4, 8 and 16 ohm Taps.
Marshall Transformer Diagrams Link

Price each = $50.00

Customer Ratings Customer Ratings

Sorry, this item is out of stock.

Heyboer 18 watt Power transformer

Heyboer 18 Watt power tranny
Used to build Marshall 18 Watt Heads and Combo clones.
Laydown style with one Endbell.
It has a 120v and 240v primary wires.
290-0-290 Secondary
6.3 volt CT heater winding.
It has a 5 volt and 6 volt tube rectifier taps.
You can run either a standard 8 pin/5Y3/5V4,etc type or an EZ81/6CA4 rectifier tube.
Marshall Transformer Diagrams Link

Price each = $70.00

Customer Ratings Customer Ratings

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Marshall 50 watt Output trans

Output transformer for older style 50 watt Marshall's.
Does not fit the JCM900's but could be adapted as an upgrade.
Two El34, 6L6 or 6550 power tubes.
Marshall Transformer Diagrams Link

Price each = $90.00

Customer Ratings Customer Ratings

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Marshall 50 watt Power trans

Power transformer for 50 watt Marshall's
Has 120, 220 and 240 Volt primary
These power transformers produce around 460 to 480 volts DC when operating under load.
Two El34, 6L6 or 6550 power tubes.
Marshall Transformer Diagrams Link

Price each = $110.00

Customer Ratings Customer Ratings

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Marshall 100 watt Output trans

Heyboer Output transformer for older style 100 watt Marshall's.
Does not fit the JCM900's but could be adapted as an upgrade.
Four El34, 6L6 or 6550 power tubes.
Marshall Transformer Diagrams Link

Price each = $90.00

Customer Ratings Customer Ratings

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Marshall 100 watt Power trans

Power transformer for 100 watt Marshall's
Has 120, 220 and 240 Volt primary.
These power transformers produce around 460 to 480 volts DC when operating under load.
These are not the super high voltage transformers that you see in 1973 era 100 watt Marshall's.
Four El34, 6L6 or 6550 power tubes.
Marshall Transformer Diagrams Link

Price each = $120.00

Customer Ratings Customer Ratings

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Filament transformer

5 Volt 3 amp filament transformer
Use this transformer to add a tube rectifier to a power transformer that has a center tapped high voltage secondary.
3 amp rating means you can use it for 5Y3, 5U4G or 5AR4/GZ34 rectifier tubes. 115Vac 50/60Hz primary.
NOTE: Do not use the Red wire with the yellow stripe.
This is a center tap for the 5 volt AC winding. You do not need a center tap.
Tape off the end so it does not touch anything and short out.
Price each = $22.00

Customer Ratings Customer Ratings

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Toroidal Power transformer

Used to power tube pedals.
12 volts AC input produces a B+ of about 240 VDC when under load.
Use the AC Wall wart below to power this transformer.
Size is 40mm x 40mm x 19mm high.
Note: Use 12 volts AC, not DC to power this tranny.
This tranny has PC style mounting pins but you can also solder wires to the pins for non PC hookups.
See my chassis page for the tube pedal chassis.
Click here to see data details
See the tube pedal project on this page for usage tips and hookup diagrams
Price each = $24.00

Customer Ratings Customer Ratings

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Euro wall wart

12 volt AC wall warts
Used to power the toroidal power transformer above.
I have 3 versions of this power supply, USA-120VAC, Euro-230VAC and UK240VAC.
The wall plug pattern is different on all 3, see photo.
The plug on the end of the cord is strange.
I stock the female power jack for these wall warts on my Jacks and Plugs page.
Price each = $14.00

Customer Ratings Customer Ratings

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UK wall wart

12 volt AC wall warts
Used to power the toroidal power transformer above.
I have 3 versions of this power supply, USA-120VAC, Euro-230VAC and UK240VAC.
The wall plug pattern is different on all 3, see photo.
The plug on the end of the cord is strange.
I stock the female power jack for these wall warts on my Jacks and Plugs page.
Price each = $16.00

Customer Ratings Customer Ratings

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USA wall wart

12 volt AC wall warts
Used to power the toroidal power transformer above.
I have 3 versions of this power supply, USA-120VAC, Euro-230VAC and UK240VAC.
The wall plug pattern is different on all 3, see photo.
The plug on the end of the cord is strange.
I stock the female power jack for these wall warts on my Jacks and Plugs page.
Price each = $14.00

Customer Ratings Customer Ratings

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Note: All transformers are tested thoroughly at the factory. I have never had a bad transformer since I began in business in 1993. Please do not install a transformer unless you know what you are doing. I have had customers install transformers in amps that had power supply shorts and other problems. It is rare, but It is possible for you to destroy a perfectly good transformer.
 I do not accept returns on transformers because I cannot be 100% certain that the installer followed the correct procedures. Anyone working on an amp should be properly diagnosing the problems instead of just throwing parts at the problem and hoping it fixes the problem. If you do not agree with my No returns on transformers policy, then please do not buy a transformer. If you are qualified to install a transformer in an amp and know what you are doing, then by all means git-R-dun. If you need technical help, please go to my amp forum. The guys there are awesome and love to help.

 Common scenarios I see all the time: No sound output from the amp, it must be an output transformer, right? WRONG! Power transformer blows fuses and so it must be the power tranny, right? WRONG again Vern! Power transformer still blows fuses after you install a new one and so it must be a bad transformer, right? You are right this time...No, I'm joking... WRONG!!!! Sorry about all of the above, I just want to make sure you understand my policy on transformers before you buy one.  Make sure you know exactly what you are doing before you buy and install a transformer.


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