[font=trebuchet ms]Washburn makes lovely guitars, but their customer support for older gear is non-existent. So I don't have any info from the people that actually built this thing.

As near as I can tell, though, it's chambered. It definitely feels too light to be all solid, and some of the descriptions on sites I've surfed mentioned chambers.

Whatever. It feels, plays, and sounds just fine to me.[/font]

:D