Is this the end of the world as we know it
Doc Bottlehead has now designed and made available a 4WPC Battery powered Class D amplifier kit, which he has named "Quicksand"
http://bottlehead.com/product/quicksand ... -amplifier, 12 C cells, 18VDC.
The same TPA3122 chip can deliver 15WPC when operated with 28VDC "B+"
Basically, a 4WPC solid state "SeX amp"