I found a pair of mint Carver Amazings

you are going backwards with the parasound...the levinson is in another league.....maybe a 600 or 1000 watt McIntosh monoblock...maybe the autoformers will help with the low impedance and demands of your speakers...

a Bryston 6b or 7b is a 500 watt monoblock that can be wired to operate in parallel if that helps; these amps work well into low resistances and are moderately priced considering...about 2000 or a little more

Update, I moved the speakers so the ribbon is on the outside instead of the inside
big improvment.
I also tried a Krell KST with much better results

I listened to a pair of these with a big Levinson amp and a big Bryston driving them. Both were completely inadequate for these speakers. I don't doubt that the Krell would be a better match, both in terms of sheer grunt factor and tonal balance. Sean
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Try a Krell Ksa-250 if you run across one at a good price, should be a great match and have plenty of control. I have one I use with my Apogee Duetta Signatures...a good tube pre-amp to top it off will be a great system.

Dave

Find yourself a couple of pair of Carver Silver 9t monoblocs for about $1200 per pair and bi-amp them. One pair will get it done quit nicely....two pair will bring those speakers to their knees.