I recently bought a Sans Amp BDDI and hadn't had a chance to check it out until today. I am playing through it with a Yamaha TRB-5II and going into a Yorkville 200W combo. I set my onboard preamp and the Yorkville flat. I really love the tones I was getting. I tried all of the settings that are listed in the booklet. When I used any setting where the Blend or Presence was to the right of 12 oclock I got fuzz. While not playing it is quite loud. I am sure that when I use it tonight with the band it will be OK while playing. However, I play in a church group and when we aren't playing it will be heard. The more Presence and/or Blend I use the louder the "fuzz" gets. Any suggestions? I was happy with my tone before I got this thing. Now I am really happy with all the tones I can get, except for the fuzz, white noise, whatever it's called. Am I missing something? Thanks for any help you folks can offer.