Power Amp for Hyperion 938

I am running in a pair of new Hyperion 938 in a 12ft x 21ft room. Any recommendations? Budget is around $2000-$5000; prefer to spend less if possible. Used is also ok. Prefer tube amps(KT-88, 845, 300).

My setup
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Marantz SA-14 ver2 (modified)
Supratek Chardonnay preamp
Hyperion 938
Audience AU24 IC and speaker cables + jumper

Vocals, Jazz, Classical, Chamber, no rock.

Any input is much appreciated. Thanks.