JMP-1 Standard, Deluxe, Platinum Mods & Upgrades
Marshall JMP-1 Mod Options
Standard Mod™ $795.00
Deluxe Mod™ $995.00
Platinum Mod™ $1390.00 (Discontinued 12-19-24)
Platinum Mod™ $1390.00 (Discontinued 12-19-24) International Customers!
Midi Dump $50.00 (see bottom of page)
Upgrade from Deluxe To Platinum Mod™ $625.00
"The Platinum Modded™ JMP-1 is the #1 most widely used preamp in the industry. In the studio or live on stage, this is one of the most versatile & inspiring tone-machines there is!"
- As used by;
- Billy F. Gibbons - ZZ Top
- Dave Murray - Iron Maiden
- Brad Whitford - Aerosmith
- Keith Urban - Country Legend
- Barry Stock - Three Days Grace
- Vivian Campbell - Def Leppard / Whitesnake / Dio / Riverdogs
- Jason Hook - 5 Finger Death Punch / Alice Cooper
- Neal Schon - Journey
- Bob Rock - Producer
- Michael Wilton - Queensryche / Soul Bender
- Robby Lochner - Jack Russle's Great White
- Chris Traynor - Bush / Gavin Rossdale / Helmet / Blur / Orange 9mm
- Jay Jesse Johnson - Solo Artist / Arcangle
- Jeff Stinco - Simple Plan
- Brook St James - Tyketto / Steve Augeri (Journey) / Yellow Brick Road
- Billy Corgan - Smashing Pumpkins
- Steve Senes - Solo ArtistGuitarist
- Mike Kerr - Solo Guitarist
- Chris Slapnik - Eva Under Fire
- J. Mascis - Dinosaur Jr
Standard Mod™ $795.00
Includes All Circuitry Mods
Description / Specs:
- 1 of the top 2 preamps we mod the most!
- This Mod is in use by some of the biggest players in the world
- Ideal for small rigs! Light, portable & perfect for 'fly-in' dates
- All Modifications are exclusive to Voodoo Amps®
- Recommended for clean/blues/rock/metal/heavy players – this is a very versatile modification
- Remove the fuzzy / buzzy characteristics in favor or of gain that is more articulate/defined/clear
- Clean tones are improved - More airy/chimey/open sounding
- Increased or added headroom on clean patches
- Balance out all the frequencies so the preamp is more even sounding as well as responsive
- Improve the harmonic structure so harmonics leap off from the fretboard with ease
- Restructure the midrange so it feels more like a tube head
- We tighten up the bottom end so it's not loose / tubby / woofy
- EQ section is be more flexible and musical sounding allowing for unlimited tonal possibilities
- Lower background noise/noise floor
- You can get more of a cranked tone at lower volumes as well as improved sustain
- The preamp will be able to cut through the mix a lot better both in a recording studio as well as live
- We recommend retubing the preamp when the unit is Modded
- (1) Burned In, Tested / Selected 12AX7JJ ($29.95) - Gain channels
- (1) Burned In, Tested / Selected 12AX7JJ ($29.95) - Clean channels
- All features and functions will continue to operate the same.
- No holes are drilled / unit will look stock on the outside
- We do not modify the FX-Loop or the switching system
- Voodoo Add-On™ controls are not available for this model
- Note - The Power Amp will effect your tone so be sure to use a good quality power amp
- JMP-1 FAQ's
- New Voodoo Programmed Patches - Patch numbers #92 - #99
- Marshall JMP-1 Owners Manual
- Voodoo Mods™ retain your amps resale value verses decreasing it
- Check out our Marshall EL34 100/100 Upgrades!
Deluxe Mod™ $995.00
Standard Mod™ + CapJob = Deluxe Mod™
Description/Specs:
- Includes Voodoo Standard95 Mod™
- Recapping / replacing filter capacitors in B+ / main power supply
- Voodoo Amps Designed™ noise-reduction Modification
- Improved / restored bottom end
- Improved playability
- Increased touch response
- Reduced noise & hum
- Recommended for all units 10 years old or older
- JMP-1 FAQ's
- Check out our Marshall EL34 100/100 Upgrades!
Platinum Mod™ $1390.00 
Standard Mod™ + CapJob + Power Transformer = Platinum Mod™
Description / Specs:
- New as of 06-01-10
- Includes Deluxe Mod™ (see above)
- Includes Upgraded Mercury Magnetics VA-JMP1-P Voodoo-Designed™ Power Transformer
- $320.00 & $75.00 Installation fee (included)
- 120V 60Hz Operation
- Feels as close to an amp head as you can get
- Superior performance & reliability over stock unit
- Improved power regulation
- Greatly reduced noise & hum!
- Greatly improved feel & tone
- Smoother feel & easier to play
- Richer harmonics!
- A must for touring musicians, engineers and producers!
- Platinum Mod™ will give you the best tone, feel and performance
- JMP-1 FAQ's
Platinum Mod™ $1315.00 International Customers!
Standard Mod™ + CapJob + Power Transformer = Platinum Mod™
Description / Specs:
- No need for step-up transformers that can harm your amp!
- Includes Deluxe Mod™ (see above)
- Includes Upgraded Mercury Magnetics VA-JMP1-PE Voodoo-Designed™ Power Transformer
- $320.00 & $100.00 Installation fee (included)
- 220V-240V 50Hz operation
- Feels as close to amp amp head as you can get
- Superior performance & reliability
- Improved power regulation
- Greatly reduced noise & hum!
- Greatly improved feel & tone
- Smoother feel & easier to play
- Richer harmonics!
- A must for touring musicians, engineers and producers!
- Platinum Mod™ will give you the best tone, feel and performance
- 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!
- JMP-1 FAQ's
Upgrade from Deluxe to Platinum Mod™ $625.00
- Upgrade from the Deluxe Mod to the Platinum Mod Now!
- Includes Upgraded Mercury Magnetics for use in USA & Canada
- International VA-JMP1-PE Voodoo-Designed™ Power Transformer is also available
- $320.00 & $100.00 Installation fee (included)
- Note - free shipping does not apply
Copy Your Settings Service $50.00 - Keep your presets & settings!
- What is this? - By using system exclusive MIDI code, we can dump / back up all your patches & mapping settings into our JMP-1 for safe keeping while your unit is at our shop / being worked on.
- How is this achieved? - We midi dump all data / presets from your Jump-1 unit into our JMP-1. Once all work is completed we the midi dump from our JMP-1 unit back into your JMP-1.
- Why do I need this? - Modding, servicing and/or repairing a JMP-1 can result in potential software & switching glitches. To resolve these issues a factory reset must be performed restoring the unit to its stock factory presets. In order to save your patch & mapping settings a Midi Dump needs to performed.
- Important - Please list "Midi Dump" in the notes section of the Mod-Form If you wish to save your data/presets.
- Note - We do not keep midi backups on file.
"Get inspired - Upgrade your tone now!"
Voodoo Amps® is the Leader in Tube Amp Mods & Upgrades
Pricing, features & specifications subject to change without notice