Don't get me wrong, I have some nice boutique pedals and mods (like the Cusack Screamer and the Keeley MT-2) that I would never part with

For new players, I recommend Keeley Mod

But as a platform for great-sounding mods, you can't go wrong.

It's the most popular and effective mod for this DS1.There are many videos on YouTube about this simple great mod

I can use this and turn up the tone to play a tone filled, dirty Mötley Crüe song, and on the other side, I can turn it down and get a deep rumble and play some Black Sabbath and anywhere in between