Baez Baez amps were made by Michael Sampson in Newcastle, Australia in the 1970s. [Source: Ozvalveamps]  According to the Aussie Guitar Gear Heads forum Michael had recently made a batch of amps and was available to make more (as of 2009).  Some web reports list “Mark” Sampson.

Image Aussie Guitar Hear Heads Forum

Baez guitar amplifier