Well constructed, foam corner custom cutouts are a perfect fit for the Denon Prime 4+ which allows you to leave the controller in the lower half without having to tilt or lift it out while playing and with enough room to connect all cables. Also there is enough room to store a couple of 5 metre speaker and RCA cables for transport. Only downside is the weight a little too heavy and stacking it on the lid doesn't quite work as the little feet interfere with the corner lugs.