tube amp will drive von schweikert VR4-jr?

I'm running my JRs with a BAT VK60 for the moment and it is working out extremely well. No signs of compression or strain, even at moderately high volumes.

Being only moderately efficient, I think the speakers can benefit from being fed more power, but they do very well with less. They manage to make do with what you give them.

The Stereo Times reviewer used the Almarro A50125A with the VR4s, can give it a try.

I run mine with Quicksilver M80 tube monoblocks (80 watts per) and they sound great. They don't seem to be lacking in power at all with the VR4-jr. I recommend looking into the Quicksilver V4 tube monoblocks (conservatively rated at 120 watts per). I would love to here that combination and at some point plan on it!

I'm running mine with a Premier 11A (70Wpc). I am going to try bi-amping but with just the one amp, they seem to be adequately driven at the listening level I prefer.

More power the better. Used VTL 300's with good results, Also hurricanes, cary v-12 ect. Now using rogue Zeus, they need ever bit of that power to really get going.