Greetings, I haven't really introduced myself so I though I'd start off with a little show and tell.... I decided to get a Siegmund Micro Tube Overdrive instead of the Sansamp because it has a real tube in it, it was cheaper (used) and believe it or not it's smaller! So far I have only tried it with my Fender RAD practice amp and it did do a very good job in warming it up and giving me a B-15 like tone. I haven't messed around with the over drive settings but I planing on trying it with my main rig soon. Anybody ells have experience with Sigmund products?Apparently they are pretty well known in the guitar world.