My normal amp (an Ashdown MK500) is in the shop, so I borrowed an i500 for my gig last night. Some impressions: - It's unbelievably portable. It's small and light, fits in a nice little bag. It would be a perfect amp for anyone who has to walk a distance to a gig. - The tone was more fat and warm that I thought it would be. My MK500 is possibly the most zingy modern amp out there, so anything else might sound fat and warm to me, but I was surprised at how cozy this guy sounded for such a small SS amp. - The controls are, perhaps, a bit busy. But, then again, it was new to me and I hadn't had much chance to fiddle with it before the downbeat. - It has no 1/4" speaker output, so you are forced to use Speakons. Probably a better choice, but it would be nice to be able to go either way. - It had a little less balls than its power rating suggested. We played a mid-size club, and I had both the pre- and post- gains up to about 7, which gave me a little less stage volume than I'm used to. Not a big deal at all though. In total, I really liked the amp, although it was a different animal from what I'm used to. If I were the kind of guy to have three or four amps around to choose from, it would definitely be a contender.