Alons do sound very good with tubed gear from VTL; I also heard them with Aragon amps (back in the day, they were known as the poor man's Krell) and felt the sound to be very good as well. The IVs have that big woofer that might need a little more control than you can get from a tubed amp; I think the Forte that John suggests might be a good possibility. Unless you're in a huge room and play at ear-splitting levels, the Forte, as a Class A design, has a lot more power than its rated 50 watts (it doubles as the impedance halves) and should suffice. In fact, I heard a Krell KSA 50 Mk II, another 50 watt per channel Class A design, play the Alon IVs years ago with no problems.
Alon Speakers
Anyone familiar with ALON speakers? I have the ALON ModelIV speakers, bought new, and recently, replaced all drivers with aid of Carl Marshiotto, owner of Alon/Nola. I have no amp now to listen though. I had 2 Adcom GFA555 amps, but got rid of them, these deserve much better. I just cant afford any better, not sure when I will be able to. But I think they need VTL or Krell, something of that caliber. Ray