Thiel Owners

Todd - the doubling down spec proves the amp is not current limited. This amp is technically current limited (doesn't double down), but the current specs are so high as to be plenty strong for the job. I think I read that it is rated into "short term 1.5 ohm loads", and the output stage delivers enormous current. As (perhaps prof?) someone said earlier: at some point enough current is enough. A full lab analysis would be nice, but John Curl and Parasound have stellar reputations.
sandy - can you get any more information regarding the 2 ohm behavior of this amp? 

According to audioadvisor specs the JC5 has a max of 90 amps/channel.  I tend to look at the size of the transformer and it has 1.7kva which is pretty darn huge.   

https://www.audioadvisor.com/prodinfo.asp?number=PAHAJC5

Right On! Tom and John,
while it is nice to have a power amp that doubles down from 8 to 4 to 2, we must consider the peak (max) amps as well. If 90 Amps are not enough...?

Happy Listening!

Jon : corrected.

If I remember correctly voltage (v) = current(I) times resistance (r).  Watts equal volts(v) times amps(I).  That means that if an amp ever actually dumped 90 amps into a 4 ohm load it would be delivering 32,400 watts.  That's 43 horsepower.  It must be able to deliver that for a VERY short period of time or there's some other factor I don't know about.  I was a math major but I've never spent time trying to understand the numbers with this stuff and it's been a long time since I did any non-trivial math.  Is it phase angle related?

i=90
r=4

v = ir = 360

w = 360*90 = 32,400

1hp = 746 watts.

so, 90 amps into 4 ohms is 43.43 hp.