Судя по описанию мода, на сайте Voodooamps, там от маршала, стокового мало что осталось:
Standard Mod™ $295.00
Circuitry Modifications
Description / Specs:
All Modifications are exclusive to Voodoo Amps®
Clean tones are warmer / deeper, Mids are focused & Highs are more airy / chimey
Cleans stay cleaner longer - More Twin & Dumble like
Reduced fuzzy / buzzy distortion characteristics
Increased clarity & definition on distorted tones
Improved articulation & touch response
Increased harmonic detail & complexity
Increased sustain - Smoother & more liquid like
Easier to bend & vibrato - you will no longer have to fight the amp!
Improved frequency response - Balanced from lows, mids to highs
EQ sections are more active, flexible & musical
Highs are more transparent and open - Less harsh & grainy
Mids are very focused & cut through with ease
Deeper / richer bottom end - All you will ever need is at your disposal
Improved projection all all volumes - Cranked tones at volume levels
Cuts through the mix better live & in the recording studio
The tone is more inspiring, smoother & more fun to play on
All features will function the same - Features are not removed nor disengaged
We do not offer Modifications or upgrades to the reverb or switching circuitry
FX-Loop Mod available - See below!
Voodoo Add-On™ controls are not available for this model
All components used are high quality & are chosen for quality of tone, feel & reliability
Voodoo Mods™ retain your amps resale value verses decreasing it
Approximate turn-around time 5-7 days - rush service is available
Deluxe Mod™ $564.00
Output Transformer Upgrade to Standard Mod™
Description / Specs:
Includes Standard Mod™ (see above)
Includes Upgraded Mercury Magnetics VA-TSL100-O Voodoo-Designed™ Output Transformer
$219.00 & $50.00 Installation fee (included)
Superior tone & reliability over stock output transformer
Enhanced quality / depth of tone
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
Transformer FAQ's