Headphone amp as main amp?


Having heard gobs about increasing watts available as Ohm decreases, I have stumbled upon an interesting design from PERREAUX. It is their newest headphone amp which at 32 ohms seems to produce about 2.2 wrms....Isn't that supposed to be 2 watts? The headphone amp is said to be stable to about 8 watts....which makes me reason the following:

32 ohms....2.2 watts
16 ohms....4.4 watts
8 ohms.....8.8 watts....but then, I guess I am just attempting to follow a logic here, not all amps double as impedance is halved.

Nevertheless, can it be that this design puts out enough watts to run a high sensitivity, full range driver in a horn cabinet?

I wonder....not that I was going to try this.
bemopti123
The microzotl which puts out about 1-2 w will drives 92 dB speakers very nicely in my home office (moderate volumes of course) and 95db horn speakers in my 14 X 22 living room to very nice volumes.
David Berning makes one that is also able to be used as a small amp. The MicroZotl, I think?
There has been a ton of discussion about the Perreaux SHX1 as a headphone amp over at www.head-fi.org which you can find with the search feature there. I'm not sure if anyone has used it to drive speakers.