38 pounds is correct. AVA power amplifiers are very efficient mechanical designs.
Take a close look at the photos above. No short cuts but no excess weight just to make them heaveier to "sound better".
With AVA products you pay only for outstanding performance, nothing else.
Note that in stereo mode the amp runs in differential mode with active plus and minus power to the speakers so each of the plus and minus signal paths have independent speaker fuses. Audio and power supply grounds are completely isolated from the chassis, one reason why the amp is so quiet and pure.
Frank