Its not often you buy something that surpasses your expectations but Im dead chuffed with this unit. Just your average time to time player,Ive had a Pod 2 and a Roland Micro cube both of which I liked but this is the one l really connected with and you get the sense of playing a proper amp on it. I was also totally shocked to discover that the USB is Audio In & Out which means I can plug it in to the computer, have my headphones connected to the GP100 and noodle away whilst the output of the computer comes to the headphones too. So useful for practicing against youtube tutorials etc. It was recognised without drivers tho it needed to be on the back usb ports on my MacPro 5,1 after that it worked great. I opened a new project in Logic, hit record and bingo, hi-quality audio recorded straight in, no faffing with mics etc. I really like a lot of the presets and like the Chorus-A a lot. The amps sound nice to me, I only finally learned about the different sounds of each type recently and discovered that my favourite is the Fender Tweed sound and this seems to do that well. Drum machine inside is simple but will be useful. I didnt want to spend a lot of money, just wanted something to practice with headphones on and was amazed at what came in the box. Happy customer.