Love this thing but I'm just not getting enough use out of it to justify keeping it...   The Backbeat is a wearable subwoofer that allows you to feel your bass playing and is a tremendous accompaniment to IEMs although it's also effective with your own amp - especially when you have to keep the volume down - delivering a stadium feel to proceedings. It's a great home practice add on too for quiet practice but feeling the bass!   I've only used this at home and at one practice