Thanks, everyone, for your input. Since I actually already own the Advents and do not own the Jolida, I'll be looking for a different amp, rather than a different set of speakers. I do understand that there are better speakers (and certainly more efficient ones) out there, but the whole point of putting this system together was to make use of some old Advents I had lying around. Hoopster - part if it is nostalgia. They were my Dad's and I grew up listening to them. Atmasphere, I'm also a composer/recording engineer, and much as I do genuinely like the Smaller Advents, I can't imagine using them as monitors. When I get around to replacing my my studio monitors (not happening for awhile), I'll probably try to go B&W (600 series or so).
Anyway, can anyone recommend a sub-$1000 tube amp that can drive the Smaller Advents? If this helps, according to Stereophile's measurements, the Smaller Advents' impedance never dips below 4 Ohms (regardless of frequency), and they measured the sensitivity at around 84.5 dB. The recommended minimum power is 15 W into 4 Ohms (though of course I'm guessing I'll want more than that). The room is pretty mall - maybe 12 x 12 with a fairly low ceiling. I live in a city row house, so I rarely crank anything.
However, unless anyone has any suggestions for tube amps that would work, I'm thinking I'll have to go SS. I'm looking into Rotel, Music Hall, Musical Fidelity, Outlaw Audio, and maybe NAD. I'd also be open to cool vintage suggestions (old McIntosh, Pioneer, Marantz, maybe?)