These are great headphones alone but when used with the Boss app and as amplifier, they really rock. The experience of playing on stage or in a studio comes across nicely. I purchased these and played through them a few times at home. They are great for silent practice, but I built a pedalboard that has a headphone amp, so I hardly use them at all. They are definitely cool and sound awesome. The headphone and case bundle sells for $430 new. Grab them if you're interested because these are like new, firmware is up-to-date and ready to play. I think it's a very good price in this like-new condition.