Dumble ODS: 100W HRM

29 May 2010

After building a 50W Dumble Overdrive Special (ODS) the next logically thing was to build a louder, fancier Dumble amp. Dumble Overdrive Special’s come in two flavors, HRM and non-HRM. HRM stands for Hot Rubber Monkey (though often called Hot Rodded Marshall) and refers to a Marshall tonestack placed at the end of the Overdrive channel. This added internal trim pot based tonstack allows the player to have better control over the Overdrive channel tone.

Since the PAB disables the tonestack in the Clean channel you can see how using the PAB and the Overdrive channel simultaneously allows you to have a dedicated clean tone and rely less on the Clean channel tone. In other words you don’t have to compromise your Clean channel tone in order to get a good Overdrive channel tone and vice versa with HRM ODS’.

Though there are many similarities between the HRM ODS and the non-HRM ODS this 100W HRM build and my 50W non-HRM ODS build are quite different sounding. I enjoy the complexity, tweaking and sound of Dumble amplifiers so I decided to take on this build for these reasons. [you know you want to read more…]


Dumble ODS: 50W #124

17 July 2009

Dumble amplifiers are synonymous with the rarest finest boutique amplifiers.  Alexander “Howard” Dumble started building Dumble brand amplifiers in the 60’s in southern California. Over time he made and designed many amps (most notable the Overdrive Special) that were used by some very big names in the music industry (Stevie Ray Vaughn, Eric Johnson, Carlos Santana, John Mayer, Robben Ford, Larry Carlton, Ben Harper, etc.).

All of Dumble’s amps are hand built one at a time sometimes taking years to build and tweak just right for the client. There are many stories of Alexander Dumble and the various quirks and antics surrounding his business and persona…

The Overdrive Special (ODS) is by far Dumble’s most well-known and popular amp. As a result they are Dumble’s most produced amp with approximately 250 built. With previously owned ODS’ selling for over $100,000 USD these days online they are not your average basement rockers amp. [you know you want to read more…]


The Ultimate Boss CS-3 Mod

February 14, 2009

Ideology Behind the Mod: Another Boss pedal hits the chopping block! The Boss CS-3 compressor stock is just a terrible pedal in my opinion. It is incredibly noisy; I mean it has a ton of noise! Yes compressors are high gain and noise is to be expected from them but this pedal design seems excessively […]

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The Ultimate Boss BD-2 Mod

August 28, 2008

Ideology Behind the Mod: After playing with Boss BD-2 for a while I was not impressed. No blues player would ever need the gain this unit puts out. Even the minimum gain was blowing my head off. This pedal was very shrill sounding, I couldn’t use the tone control at all, way too piercing. There […]

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