Finally decided to do a little practicing this morning instead of reading the forum. I'm running a passive bass directly into a bridged Stewart 1.2, then into some Eden cabs. The volume and tone coming out sound normal. Except when a note is played there is a strange buzzing along with it. As the volume of a sustained note fades the buzzing is more noticable. It only buzzes when a note is being played. The sound is like a hand full of BB's in a glass bowl sitting inside the speaker cabinet. Or like there was a snare drum sitting in front of it with the wires vibrating. My first thought was that there was something loose inside one of the cabs, so I took it out of the bridge mode and hooked up one channel to each cab. Same thing. Buzzing coming out of each separate channel. So then I tried the cabs with the PLX3002. A little weak because of no preamp, but no buzz. So now I'm starting to feel a little sick because it looks like it is coming from the Stewart. Not something simple like loose hardware in the bottom of a speaker cabinet. What a mess. It's still on warrantee. But to send it back first I have to drive twenty miles, pay to have it boxed up and shipped back to Stewart, then wait a few weeks to get it fixed. Then pay the return shipping. This unit has never gigged, in fact it has never left the house. On the other hand, when you get back about 15 feet from the speaker cabinets, the buzzing and slight distortion give my bass an overdriven sound sort of like Jack Bruce on "Crossroads" or Mel Schacher with Grand Funk. Maybe I should just get an AB box and use the PLX for the clean channel and the Stewart for the fuzzed out distortion channel? No. Have any of you Stewart guys had a buzzing 1.2?