I thought I'd update this thread since Perreaux finally has some info on this amp up on their website.
Perreaux > Products > Silhouette Series Overview > "SXH1" Headphone Amplifier:http://www.perreaux.com/product.php?idp=48
Interestingly, the power output specs (and interior photo) differ slightly from those on AA (Audio Advisor).
Looking over the SXH1 (23-page) PDF manual, I found it rather (untypically) informative for this sort of consumer product.
The following photos are from the Perreaux > PressRoom > Gallery.
SXH1 front phones - 247 KB:http://www.perreaux.com/img/gallery/...nes_cables.jpg
SXH1 rear inside - 286 KB:http://www.perreaux.com/img/gallery/...ear_inside.jpg
SXH1 knob - 251 KB:http://www.perreaux.com/img/gallery/SXH1_knob.jpg
SXH1 silhouette - 241 KB:http://www.perreaux.com/img/gallery/SXH1_silhouette.jpg
SXH1 front plug - 243 KB:http://www.perreaux.com/img/gallery/SXH1_front_plug.jpg