I have just got my amplifi TT and I am sad to say that it is the worst peace of hardware I have ever got. The app is a horrible and half of the does not work. Don't mind with built in presets because thy are lollipop, but if you spend some time with it you can actually get a decent tone out of it however yo will not be able to save it and access it when you like. OMFG this thing is a joke. Might not be so bad if user experience is better but it is so bad that I will not even try any more. I am so disappointed Line6!!! This is definitely the last Line6 product I will ever try. It is just not worth my time. And I cant even return it because I got it for my birthday. I would rather have new set of strings then this.