Boss ODB-3 Mod

I play a fender P-bass through a Humphrey Audio "Atom smasher" and now through the Humphrey Audio ODB-3 bass overdrive pedal into an Ampeg SVT-III pro head with a 1 x 15/2 x 10 cabinet(s)or sometimes a Fender Bassman 20 or 250/210, depending on the size of the gig.  I am trying to get my old sound which was the Ampeg SVT-II "all tube head" through an Ampeg 8 x 10 cabinet, from a pedal...yes I know and quit laughing!  It's not the same but is as close as I have gotten, and this has been a process of over a couple of years of borrowing and trying out numerous pieces of gear. His mods have made this a true overdrive pedal and not a distortion pedal.   

I have not had this pedal very long.  I am 100% confident that Humphrey Audio would be more than helpful if any problems would occur.   

Easy to use and easy to get a good workable "overdriven" tone out of it.The blend knob is the key to pulling everything together.   

This guy is fantastic to deal with!  He has answered numerous question from me, usually the same day or night.  He is very friendly, helpful, and professional!  He exceeded my expectations already.

I am a rock player who plays in a weekend cover band, an all instrumental band, as well as some solo bass work.  I was so impressed with my Humphrey Audio "Atom Smasher" I sent him a Boss ODB-3 Bass Overdrive pedal to modify.  My goal is to get that overdriven cranked up Ampeg SVT-II tone...in a pedal, stop it!  The only way to do that is to buy an Ampeg SVT-II head and crank it up, work the tubes, and run it through an 8 x 10 cabinet...it's not going to happen in a pedal!  With that said...this pedal is as close as I have gotten.  I have tried numerous pedals, rackmount gear, digital pod things, etc...I have down sized my rig over the years, with age comes the idea of lighter and less gear!  I have played through the Ampeg SVT-II head with an 8 x 10 cabinet and the Ampeg SVT-III pro head through two 4 x 10 DL cabinets.  My goal is to get "close" to that sound in a smaller set up.  The ODB-3 has helped me do just that. the original Boss ODB-3 pedal is more of a distortion pedal than an overdrive pedal. It's not bad, just not great.  What ever "mods" were done to it made it more versital, and sound more like an overdriven amp, which was my goal.  I am once again very happy with my "2nd" Humphrey Audio pedal.  I'm  giving the pedal an 8.  I would put the Ampeg SVT-II head (cranked up...which I did many of times), through an 8 x 10 cabinet a 10.  This pedal will get you close.  You don't have to re-tube it (a $400 dollar expense)is very light, and sounds good through any number of combinations of bass amps! Hope this can be of some help.