Ketchup, let me first advise you that the notion of doubling down, is just that, a notion. The truth of the matter is more often than not a manufacturer will under rate their amps power out put into 8 Ohms, ergo their 4 Ohm loads appear to be "doubling down". Before you get the idea that this is just an effort to dupe the public, please keep in mind that this usually only done by the the "better" manufacturers and is usually limited to solid state gear. This is much like (in the good old days) the conservative under rating of horse power in better automobiles. Basicaly it's still a decent measure of an amps ability to handle lower impedances. During my last conversation with the folks at Conrad-Johnson, I was told that these particular Sonographe's were a limited edition run for one particular dealer, and they recommended it as a good value amp to use with Thiels. Now that recommendation may be taken as self serving, but, c-j has a very good reputation for customer service. My own experience indicates that reputation to be deserved.