Just received a two volume footswitchable Ultimate Attenuator. You can basically set two volumes (it has two volume knobs) and footswitch between them. The cool thing is, you can set one volume for zero attenuation and the other for just a taste of volume reduction. Like having a soundman! I only had about 15 minutes to check it out but it seems very transparent and I love the fact that the reduction is not preset in detents like other units. I own or have owned Komet and Dr. Z Airbrakes, THD, Altair and Marshall attenuators. I know this isn't a true attenuator, but I don't care, it sounds great. If it doesn't tomorrow night after rehearsal, I let you all know.