Cheap kit from China. Simple design, low price. Never checked the specs, but wanted to build this one. As with other nice stuff from China, I got the chassis cheaply, though it was intended for a power amplifier I have already ruined the front, drilling a hole for the phones plug. The back side has, on the other hand too many holes (for speaker connectors). Not to mention the packing tape our Chinese brothers and sisters used when packing the two halves fo the chassis.