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Boss SD1 Modded

2179 Views 17 Replies 5 Participants Last post by  Stratin2traynor
I just finished modding a Boss SD1 with the Monte Allums GT mods. There are three stages to the mod. The first is a dual gain switch adds a bit more gain when switched. The next is a symetrical gain switch changing the clipping diode arrangement, interesting here, he uses a GE transistor as a clipping diode which gives some nice results. The last part is the swapping out of the IC and a few cap changes for hi fi mods. The mods are not for beginners and a bit time consuming, but if you have one of these pedals around I would recommend looking at these mods. They improved the overall sound and versatility of the pedal and remain relatively quite. Here's a finished pic of the outside not sure about posting the inside mods.


I'll leave it up to the fellow forumite to post sound clips... :D
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I haven't done the SD1 mod but I have done the MT-2 Sustainiac Tri-mod and the BD-2 H2O Mod. Both greatly improved the sound of the pedals. The MT-2 is pretty useable now (I was going to toss it but decided to try the mod.) I'm still more of a guitar directly to amp guy now but the MT-2 is a lot of fun and very versatile - wide range of OD and distortions.
How did the H2O mod turn out ?? I have one sitting around and have been wondering about that mod. The stock BD2 is so so and would like to make this thing useful. I did the Dyna Comp mod for a player and it sounded better after the mod for sure. His mods seem fairly good and his prices are fair considering he supplies parts,solder and all.
It turned out really good. Easy to do and it is very transparent as MA described on his website. Cleans up nice with the volume and sounds pretty authentic. Well worth the $20 mod. If I had the know how or better yet confidence in my chops, I would post some sound clips.

I've also modded my DS-1 to Keeley specs. Sounds great. Exactly the same as my buddies DS-1 Ultra/SEM - can't even tell the difference.

Now I want to build my own amp - with a kit of course. Just haven't decided on which one (or saved up enough cash yet!)
Great I just ordered the H2O kit. As for amp building check out trinity amps website for kits. I have my eye on the Trinity 15 kit with tone tubby speaker, already have a cabinet.
I've been looking at those. Just concerned about the duties etc... Besides, for some reason I really want to get a surf green (aka: sea foam green) strat? Why, I have no idea. But, I'm keeping my eyes open.
Trinity is out of Toronto area, should be no duties. Ah but I hear ya on the sea foam green Strat, I've always liked Lake Placid Blue on a strat, maybe someday.... Oh well back to the fat boost project, just missing two caps...
I didn't know that. I assumed that if they were using US pricing that they were based in the US. Excellent news. What are you looking for in terms of caps. I have a ton.
Interesting. I changed the ceramic disc caps in my LP style guitar to a "different type of cap" (don't know what they are called but it was a yellow tube instead of the disc) don't really know if it made much of a difference because I was changing pups and electronics at the same time. LOL. I have to try and stay away from minutae like that because I tend to get obsessed with it...I'm sure there are many just like me on this forum LOL!!
Just checked. I have all kinds but the "biggest" one I have is 1 uF. Sorry I couldn't help you out PaulS. Do they even make a 3.3 uF in 50V?? My 50V 1 uF are pretty big, I can just imagine how big a 3.3 is...
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