Fender® Vintage
Modification Kits

We have modification kits primarily for vintage blackface and silverface amps from the 1960s and 1970s



(Picture for illustrative purposes only - actual kit components will vary from this photo)

 
FENDER "BLACKFACE" KIT  This kit changes the circuit design of your late 60s or 70s vintage Silverface Fender® Amp to the original "Blackface" amps of the early-to-mid 60s.   Most players agree that the pre-CBS blackface amps sounded much better than the silverface successors designed by the CBS engineers.   With this kit, you can take your amp back to the Leo Fender design.  In addition, you also restore the bias-setting capability of the amp in place of the "balance" control.   These modifications are completely reversible, and no permanent changes to the chassis (such as drilling holes, etc) are required.  The kit includes 9 resistors, 4 capacitors and instructions.   Note:  This kit does NOT apply to the silverface Bantam Bassman, Bassman, Bassman Ten, Bronco, Champ, Deluxe Reverb, Musicmaster Bassman, Princeton Reverb, or VibroChamp.

Part #FBK-1

$11.95  


(Picture for illustrative purposes only - actual kit components will vary from this photo)

 
FENDER NORMAL CHANNEL MOD KIT  Many Fender amp owners never use the Normal Channel.  If you don't use it then perhaps this Normal Channel Mod will give it new life for you by converting it to a lead channel.  Only four components are changed.  The new components filter out excess bass frequencies that tend to boom or get muddy when severely overdriven. You will also gain some clean headroom and maximum volume because low frequencies use up a lot of the amps power so removing very low frequencies allows more amplification of the remaining audio frequencies.  With these four changes you can push the Normal Channel very hard with gain and boost pedals and get a nice, tight, modern overdrive tone. Reverb and delay effects and hot humbucker pickups will also sound better through this "lead" channel because the reduction in low frequencies will keep the amp from being overwhelmed. This mod will also make the channel more pedal friendly in general. When evaluating this mod be sure and try a boost pedal to get the gain and distortion up--this is when this mod really shines.   With an external A/B footswitch box, you can easily switch from the Normal Channel to the Vibrato Channel.  NOTE:  This mod is ONLY for dual channel amps from the Blackface and Silverface era (1973-1980), and does not apply to the Fender Bassman.   Also not applicable to single channel amp models such as the Champ, Bronco, VibroChamp, Princeton, Princeton Reverb.  Does not apply to reissue amps.

Part #NCM-1

$8.95  


(Picture for illustrative purposes only - actual kit components will vary from this photo)

 
FENDER NORMAL CHANNEL REVERB AND VIBRATO MOD  This mod incorporates the existing reverb and vibrato on the Normal Channel of Fender vintage 60s and 70s Blackface and Silverface amp.   Some players like to use this mod in connection with the NCM-1 mod in order to give their Normal Channel reverb, vibrato, and a lead channel tone quality.    NOTE:  This mod is ONLY for dual channel amps with reverb and vibrato in the vibrato from the Blackface and Silverface era (1973-1980), and does not apply to the Fender Bassman.   Also not applicable to single channel amp models such as the Champ, Bronco, VibroChamp, Princeton, Princeton Reverb.  Does not apply to reissue amps.  Does not apply to amps in the Blackface era that did not have reverb, such as the Pro Amp, Showman Amp, etc.

Part #DIDRV-1

$4.95  


(Picture for illustrative purposes only - actual kit components will vary from this photo)

 
FENDER 65 DELUXE REVERB REISSUE "DE-FLUB" KIT This kit upgrades the first-stage power supply filtering in your Fender Deluxe Reverb Reissue Model from 1991 to the present.  Also fits the 68 Custom Deluxe Reverb from 2012 to the present.   This modification upgrades the front end of the power supply in the DRRI to Blues Deville specs.  BIG improvement to bottom end delivery at any volume, or as we like to say, "De-Flubs" the bass.  

Applies only to the 65 Blackface Deluxe Reverb Reissue and the 68 Silverface Custom Deluxe Reverb.    Not for original vintage Deluxe Reverb amps from the 60s and 70s.

Part #FDRK-1

$11.95  



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 larger view
FENDER BRIGHT PULL SWITCH   Some of the smaller vintage Fender blackface and silverface amps from the 60s and 70s omitted the bright switch ... and by doing so, they do not have the tonal options of their larger big brothers.   This mod kit adds the "Bright Switch" option to original vintage amps like the Champ, Bronco, VibroChamp, Princeton Reverb and Deluxe Reverb from the 60s and 70s.   This pull-switch pot replaces the volume control in these amps, and to engage the bright feature, you just pull out on the knob.   No holes to drill.  The pull-switch pot comes prewired with the bright capacitor.  You just transfer and solder the 3 wires from the old pot to the new pot.   Soldering is required - this is considered an easy modification.  Instructions included.   You will need two of these kits if you wish to equip both channels of a Deluxe Reverb amp.   Note:  Not for the reissue Princeton Reverb or Deluxe Reverb - original vintage amps only.

Part #FBSK-120

$14.95  


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larger view

Fender® RCA VIBRATO SHORTING PLUG   Did you know that on vintage Fender® amps (Blackface, Silverface), the reverb will work without a footswitch plugged in, but the vibrato will not?   This handy-dandy little RCA shorting plug will fix that problem, if you do not own or prefer not to use a footswitch on your vintage 60s or 70s Fender® amp.   Just plug this little RCA plug gadget into the vibrato footswitch jack on the back panel, and your vibrato will come alive.    Turn the intensity knob to zero to cut out the vibrato when this plug is inserted.  Note:  Does not apply to Bronco, Vibro Champ, Princeton, or Princeton Reverb amps.  Inserting this plug turns the vibrato off in those models, removing the plug turns it on.
Part #FSP-100
$1.99  


(Picture for illustrative purposes only - actual kit components will vary from this photo)

 
FENDER "S-L-O-W-E-R  VIBRATO" KIT  This kit changes the circuit design of the vibrato to slow down the slow end of the vibrato speed control considerably, giving a much wider usable speed range.    Fast speed remains virtually unchanged, and the intensity remains the same.   Jazz players especially love the slower vibrato.  The official Fender vibrato "tick cure" is also included in this kit, as listed on a Fender service bulletin from several years ago.   This kit is applicable to all two-channel vintage Blackface and Silverface amps from the 1960-1970 era.   This kit does not apply to Bronco, Princeton or VibroChamp circuits.  Kit includes necessary parts and instructions.   Soldering capability is required.

Part #FSVK-100

$3.50  



FREE!   DOCUMENTATION FROM MARK MOYER FOR IMPROVEMENTS TO THE FENDER® CUSTOM VIBROLUX REVERB REISSUE.

Documentation only for changing the Fender® Custom Vibrolux Reverb into a "hiss-free classic".   This download is the complete documentation of the famous Mark Moyer mods for the Custom Vibrolux.    The mods include the following sections, of which any or all may be completed:   1. Eliminate Reverb on Normal Channel, 2. Fuller, More Alive Reverb, 3. Shunting Cap for Parasitic Elimination, 4. Add Negative Feedback Loop (for a more traditional Fender sound, and less hiss), 5. Remove Protection Diodes (to prevent nuisance blowing of fuse and improved high-frequency response), 6. Ground Reference Resistors (for hum and hiss reduction), 7.  Add Adjustable Bias

Thanks to Mark Moyer and Jason McLaren for creating and annotating the documentation.

Free!


FREE!   DOCUMENTATION FROM BILL M FOR IMPROVEMENTS TO THE FENDER® BLUES JUNIOR.

Documentation only for improving the Fender® Blues Junior.   This download is the complete documentation of the famous Bill M. mods for the Blues Jr.    The mods include the following sections, of which any or all may be completed:   1.  Standby Switch Installation, 2. Tone Stack Mod, 3. Coupling Cap Installation, 4. Power Supply Stiffening, 5. Twin Stack Mod, 6. Bias Control Installation, 7. Switchcraft Replacement Input Jack, 7. Upgraded Output Transformer. 

Sadly, Bill Machrone (Bill M) passed away on October 30, 2016.    His legacy is now being carried on by his son, Andrew, and the www.billmaudio.com website is still online.

Free!

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