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   Standard, Deluxe, Platinum Mods & Upgrades

  

 Marshall JCM800 4212 Mods
Standard Mod™  $245.00  
Deluxe Mod™  $499.00  
Platinum Mod™  $887.00 
Platinum Mod™  $887.00  International Customers!  

 

 
Mod Process & FAQ's
Packing & Shipping Info

 

  Standard Mod™  $245.00
Circuitry Modifications

Description / Specs:

  • All Modifications are exclusive to Voodoo Amps®  
  • Clean tones are warmer / deeper, Mids are focused & Highs are more airy / chimey   
  • Improved articulation & touch response
  • Increased sustain - Smoother & more liquid like
  • Increased Gain / Distortion
  • Cranked tones at lower & cranked volume levels 
  • Improved harmonic structure - harmonics seemingly leap off from the fretboard 
  • Vibrato & bends feel smoother - You will not have to struggle or fight the amp
  • Added bottom end
  • Highs are more transparent - Less harshness
  • EQ sections are more active, flexible & musical
  • Over all frequency response is better balanced / more even sounding
  • You will cut through the mix better live & in the recording studio 
  • All features will function the same - Features are not removed nor disengaged
  • We do not offer Modifications or upgrades to the clean channel, reverb or switching circuitry  
  • Recommended Add-On™ Controls - Bottom 1 & 2, Global™, Mid-Slice™ & Mid-Girth™ 
  • All components used are high quality & are chosen for quality of tone, feel & reliability 
  • Important  Modifications do not apply to models manufactured in 1982 & 1983 - Marshall Date Codes
  • The 82' & 83' models were not designed the same & have little/no gain by comparison
  • Modding these models requires removal of stock circuitry & installation of a custom hand-wired circuit (1 or 2 channels) - Call for details & pricing
  • Voodoo Mods™ retain your amps resale value verses decreasing it
  • Approximate turn-around time 5-7 days - rush service is available 

  

  Deluxe Mod™  $499.00 
Upgrade to Standard Mod™

Description / Specs:

  • Includes Standard Mod™ (see above)
  • Includes Upgraded Mercury Magnetics VA-4212-O Voodoo-Designed™ Output Transformer 
  • $199.00 & $55.00 Installation fee (included)
  • Superior tone & reliability over stock output transformer
  • Vastly increased sustain - leads are much more liquid like & fluid
  • Effortless Pinch / artificial harmonics
  • Greatly improved articulation & definition
  • Increased / richer bass response
  • Increased even-order harmonics (IE: sounds much more musical)
  • Massive rhythm tones - when you hit a chord it's there immediately
  • Superior quality & performance over stock output transformer
  • Increased headroom - holds together better at stage / higher volumes
  • Approximate turn-around time 5-7 days - rush service is available 
  • Bottom Line - The Deluxe Mod™ will give you the best tone possible
  • Transformer FAQ's

 

  Platinum Mod™  $887.00  
Power & Choke Transformer Upgrade to Deluxe Mod

Description / Specs:

  • Includes Deluxe Mod™ (see above)
  • Includes Upgraded Mercury Magnetics VA-4212-P Voodoo-Designed™ Power Transformer
  • $249.00 & $80.00 Installation fee (included) 
  • Includes Upgraded Mercury Magnetics VA-4212-C Voodoo-Designed™ Choke
  • $39.00 & $20.00 Installation fee (included) 
  • 120V 60Hz Operation (230V & 240V also included) 
  • Superior performance & reliability
  • Improved power regulation  
  • Greatly reduced noise and hum 
  • Greatly improved feel & tone 
  • Smoother feel & easier to play
  • A must for touring musicians, engineers and producers!
  • Platinum Mod™ will give you the best tone, feel and performance
  • Average turn-around time 5-7 days - rush service is available
  • Transformer FAQ's 
  • Voodoo Amps® World AC Voltage Guide

 

  Platinum Mod™  $887.00  International Customers!
Power & Choke Transformer Upgrade to Deluxe Mod

Description / Specs:

  • No need for step-up transformers that can harm your amp!
  • Includes Deluxe Mod™ (see above)
  • Includes Upgraded Mercury Magnetics VA-4212-P Voodoo-Designed™ Power Transformer
  • $249.00 & $80.00 Installation fee (included) 
  • Includes Upgraded Mercury Magnetics VA-4212-C Voodoo-Designed™ Choke
  • $39.00 & $20.00 Installation fee (included) 
  • Includes 120V, 230V & 240V AC operation 
  • Other voltage available upon request
  • Superior performance & reliability
  • Improved power regulation  
  • Greatly reduced noise and hum 
  • Greatly improved feel & tone 
  • Smoother feel & easier to play
  • A must for touring musicians, engineers and producers!
  • Platinum Mod™ will give you the best tone, feel and performance
  • Average turn-around time 5-7 days - rush service is available
  • Save money! Buy from Ebay USA, have it shipped directly to us & we will ship it you!
  • Save money on shipping! We offer several shipping options, please Email us for an estimate!
  • Transformer FAQ's 
  • Voodoo Amps® World AC Voltage Guide

 

 

 Mod-Form  /  Mod Process & FAQ's  /  Packing & Shipping  /  Reviews  /  Contact

"Get inspired - upgrade your tone now!" 


 

 

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Pricing, features & specifications subject to change without notice

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If you do not see your amp listed here please call (607-256-0465) or email us!  

 

  

 

Customer Feedback "I went with the Platinum Mod for my 2 channel and the gain channel sounds bad ass! I play mostly rock to metal and I've own a crazy amount of amps over the years. I would have been happy if the amp sounded a little better but after the mods this amp is off the chain! I get compliments on my tone after every show we play, major kudos to Voodoo Amps!" Aaron Patronete, SC

Customer Feedback "The amp has more gain and it's a hell of a lot easier to play. The pinch harmonics scream on this beast!! The amp responds extremely well and I can't believe how complex the harmonics are. I so close to selling this amp and then came across Voodoo's website, these guys are the tonal Gods of the universe!!" - Todd Davis, NV

Customer Feedback  "Trace at Voodoo Amps by far THE best amp tech I have ever talked to, not to mention that he is a fantastic guy that really really provides the best possible service." David Park, Harmony Central Reviews

Customer Feedback  "I've lived with the amp for 2 months now and played 12 shows. While they don't Mod the clean channel it sure does sound better! The gain tones are where this baby shines. Its very liquidy and much smoother but still has the Marshall "aunch" in the mids that is so addictive. The lows are solid and much deeper sounding. Over all the tone is s&!t load more three dimensional and leads freaking scream. I've got 6 boutique amps and they are all going on eBay tomorrow!" Dean Avery, CA

Customer Feedback  "This thing went from being a dog to a raging snarling beast!! If yah got one of these animals and you aren't happy, fire it off to Voodoo now!" Rick Benson, FL

Customer Feedback  "Voodoo Amps is 100% pro. Communications were great, and the MP-1 arrived with one of the best packing jobs I've seen. Whether you want an MP-1 mod, are looking for other options with existing gear, or want to dial in on one of the Voodoo Amps in-house creations, I have no doubt that you will enjoy working with this company. By the way, I do a lot of research before I buy anything (particularly something I cannot preview in person). Every comment I've seen about Trace & Voodoo Amps has been positive. To me, that says a lot." m1tch3ll , Harmony Central Reviews

Customer Feedback  "The amp was purchased off from eBay and shipped straight to Voodoo Amps for them to work their magic on. I got the Platinum Mod and they also broke the amp in for me. I'm a session player and I also tour. I used this amp on some commercials and no one could believe how good the tone was. I highly recommend the Global and push pull Bottom Control as well (they are incredible!). The customer service really is all that and more. I've never been treated so well in my life, I'll be doing a lot more business in the near future." Michael Parla, UK

Customer Feedback  "These guys are first class. It doesn't get any better. Thanks Trace." Pete, Harmony Central Reviews

Customer Feedback  "Trace and the guys at Voodoo are there for you every step of the way. First call to tell them what I was looking for and what kind of budget I had. Trace had a few ideas...took my axe over and tried some stuff out and he was right on the money...this amp was exactly what I was looking for. Every phone call was met with a prompt answer or a call back with information. First class Customer Support." Nutz, Harmony Central Reviews

 

 

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