Can I "double-wire" speakers?

Gotcha. I'll remove the jumpers between the two sets of binding posts and see what happens. I haven't received the Sophia yet, but I suspect I won't get the same bass response as I do from the Onkyo with its Velodyne sub.

Then again, this might all be a moot point if the Sophia performs as well as advertised.

Thank you for all your advice.

It occurred to me not for the first time that much of my concern stems from the seduction of bass. The Tituses by themselves are wonderful, transparent speakers worthy of all the praise they received. Yet I set them up alongside the Velodyne in order to emulate the frequency response my (now long-gone) set of Maggie 3.6R's and now it's going to be tough to extract myself from the magic of the bottom end.

I think Stereophile a few years back had an interesting article on how bass, though adding the added frequencies, can cloak music and muffle the mids. It went on to say that pop culture is so attuned to bass and vibration that we think we need it for the music to sound good.

The Sophia is billed as a pure amplifier, though it does have a volume control. However, it only has one set of inputs. SO I guess it's integrated inasmuch as it has an attenuator, but that's the only integrated feature it has. It has no pre-out or sub connection (though I can't think of a tube-powered integrated that does, though they must be out there).

All of this will be settled in the next few days. I love this forum - so many helpful people and opinions!