Modified DOD YJM308 Yngwie J. Malmsteen Preamp Overdrive

Very Good
This seller is open to offers
Shipped From
Sabino's Gear
Caledon, Canada
Joined Reverb
Quick Responder
Quick Shipper

Find More on Reverb

Reverb Protection

Buy with Confidence – Reverb Protection has you covered

  • Live support from an expert team of musicians
  • Simple and straightforward returns
  • A safe community for finding the gear you want

About This Listing

*** This is description is taken from Modest Mike's Mods. This pedal was purchased from Modest Mike's Mods 9/13/2014. ***


The stock YJM308 is a nice pedal; it has lots of potential. It reminds me of that smooth classic distortion sound of the '70s. By design, this pedal rolls off bass as the gain is turned up. This makes the pedal a bit treble heavy when the gain is up. This will also cause less clipping than one would expect when the gain is turned up.

We made some changes!

For starters, we replaced stock capacitors and resistors with high quality/low noise metal film components, some of a different value. This makes for much better bass response and more available gain/distortion.

When testing different diodes for this pedal, germanium diodes produced too much compression and not enough output. LEDs produced more output but did not seem to clip enough. We use a pair of silicon diodes for the clipping (distortion) on this one.

The result is a warmer, fuller pedal with more available clipping/distortion. This pedal also cleans up nicely.

We could have stopped there with the mods, but there is more:

  • We swapped out the footswitch for a 3PDT, then we re-wired this pedal for true bypass.
  • We also drilled and added an LED. The LED is clear when the effect is off, and a very noticeable yellow when the effect is switched on. I don't normally use yellow LEDs, but I think it looks good on a black pedal with gold lettering, don't you?
  • We also took out that 1/8 inch power jack, drilled the hole out to 1/2 inch, and installed a standard 9 volt DC jack. Now there is no need to have two different adapters on your board or to buy batteries. But yes, you can still use a battery if you prefer.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.

Product Specs

Listed9 months ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.learn more

Reviews of this Shop