Should work just fine unless your trying to rattle windows and shake floors. I drove a pair of 2ce's with my Jadis Orchestra Reference (about 45 w/c) and it sounded really good to me. Your opinion may vary, but, Happy Listening.
I power my 3A Sigs with Vincent ST-800 monoblocks which are a tubed/ss hybrid with 200 w/ch. This works really well. My rule of thumb - tubed power will sound like SS power of twice the watts. So, the 60 tubed watts will sound like 120 watts ss. I don't think that will be enough with the 3A's unless you only listen to chamber music. I would suggest at least 100 tube watts.
Unsound - power specs for amps are developed under static conditions. Music, however, is dynamic and that is where the difference between SS and tubes becomes evident. In my experience, tube amps deliver more dynamic power and hence sound more powerful in practical music listening than SS at comparable static power specs. This has been a consistent observation over many years and many different ss and tubed amps. Of course there are MANY factors that affect the resulting sound (like power supply, distortion profile of ss vs. tubes, etc) but for sheer dynamic power, tubes seem better to me.
Perhaps into higher impedance loads most tube amps might seem more powerful, into lower impedance loads ss might seem more powerful. According to Stereophile's measurements of the speaker in question, the impedance drops to 2.8 Ohms and the sensitivity was measured at 85 dB/W/M. That drop happens in the bass region, where a bigger cone needs to be moved. Perhaps with speakers like some 'stats the argument might be reversed.
Unsound, I know that Vandersteen did voice his speakers with Audio Research. I don't know if he still does. When I had 3As I tried Muse, McCormack, Belles and Jadis with success. I didn't care for Rogue, C-J, Quicksilver or Audible Illusions with them.