I just got my Ampeb B100R yesterday First off, I'm pretty impressed by how well it's built. Kind of heavy, but I got the casters, so that's not really a big deal (and I don't need to move it anyway most of the time). It also just looks plain old school cool, I'm really diggin' it. The tone is nice. Very warm and compliments my precision well. I can get a nice round too, which if I want it to, can be alittle aggressive. The slap tone is better with this amp than my 2x10 as well IMO. I also enjoy have the low & high mid controls as opposed to just a single mid control. Volume wise, I don't notice too much of a difference between it and my SWR (only a 65W difference), which is just fine by me. There are only a few areas where I think things could be alittle better. -Location of controls. Having them in the back, while it looks good, is alittle irritating. I'm used to be able to just adjust things from my seat, now I have to stand over it to see what I'm doing. With that, the numbers are alittle hard to see. -Speaker "off" pop. When I turn the amp off, a few seconds after the light goes out, I get two quick pops even though the volume is all the way down. Is this normal? -Headphone volume. The volume of the headphone jack is lousy. It's way too quiet and distorts when I put the volume up to 4 or 5. My headphones are the "big eared" type, not the cheapo walkman headphones. But maybe that has something to do with it, that they can't take it? -No mute switch. I'm used to have a mute switch from my SWR, but this isn't really that big of a deal.