When I first got this amps it was amazing, for the entire week I played it 24/7. It is a great amp on its own, but the week after I added the pod hd 500, which was not exactly as thrilling as I thought it would be though, It took a year to finally figure it out, and now it sounds even better. I am really happy with the sounds of this amp, so I give it 5/5 for sounds, however to actually figure it out, it is hard, so with the pod i give it a 2/5 for interface, until you actually figure out how to use it. I had to look for tons of videos, as well as countless trial and error to make it work, but in the end its worth it. Last but not least the quality. Personally I think it is one of those all or nothing for quality, it is chinese-made, but you think for the price it would be well built, however I get random static, and I know its from the amp. Even unplugged entirely, even it multiple places and stages, random static which I am not to happy about, that's why I give the Quality 2.5/5. My suggestion is make sure the amp works %100 before you buy it, but when you do It is one heck of an amp. Great Volume and Sound!!!!! Worth every penny if you can get it for $850.