Hello, I was going to write a review about the Boss GT-100, however I've only had it 1 month so far and wanted to write a more complete review after 2 to 4 months. So far so good with this Boss unit, it really has a ton of good presets ( no matter what type of contrary reviews you might run across on the internet ) if you like to micro or macro tweek your settings with ease then this multifx has that ability also. I run it through the fx loop on a 100 watt solid state amp with a 12" speaker. It sounds SPECTACULAR........................ and I gauge this sound through the ears of my neighbors which haven't even so much as knocked on the wall yet. haha