I just received a new ST-10 and I am finding a problem with my tube preamp having too much gain. Has anybody run into this problem and have any suggestions? The ST-10 replaces a tube amp that I am planning to keep so that I can roll the amp I use from time to time. I like the ST-10 but I also like my tube preamp and I didn't have any plans of replacing it. Has anybody tried Rothwell - In-Line Attenuators? I would be afraid that they would trash the sound of the ST-10.