What is this? Mostly misinformation.
Hafler had absolutely nothing to do with this unit.
We actually did help Jim Strickland of Acoustat with this design, but it happened so late in the life cycle of Acoustat that it never had any major market impact. The audio was much like our Super Fet designs of that vintage but with a huge power supply and a really nice layout.
If it is in good working order, it will be a darn good sounding unit.
Regards,
Frank Van Alstine