Most transparent power amp

Yes, Ralph, sorry. 
Thx-I misread your post. I think I was tired from a long day at the office when I read it. When you said;

The simple fact is that four ohms is not good for **any** amplifier made regardless of the technology, and this is easy to see in the amplifier's specifications.

I thought that "four ohms" referred to the amp side of things and not the speaker. Your post is clear, it was my failure to carefully read it. 

Kosst, not to belabor a minor point, but a "passive" electronic device would usually be considered to be one having no "active" components (e.g., transistors or tubes), at least in its signal path. A device which provides zero voltage gain but amplifies current and power is not a passive amplifier, in the sense that George was using the term and per what seems to be generally accepted terminology.

Regards,
-- Al
   

kosst

Al's right, the F7 is far from being passive "no active components that the signal passes through"

Cheers George