Amp for Vintage Heresy

Hey All,

I just picked up a pair of Heresy 1s for my home office / creative studio. 

Currently I’m running a WiiM Pro plus to a NAD 316bee. 
It sounds fine but it could be better. needs more Pratt!

I listen to classic rock, acoustic and good country and stream on Qobuz,

Considering either going vintage (maybe a restored dynamo st-70 , a SET 300b (maybe chinahifi), or something else…

like schiit Freya+ and Aegir , push pull el34 or kt88 integrated, or recommend something!

I’m not happy with the WiiM so considering getting a Allo Katana Player  

My reference system which I like is Nola Boxer s3, Tsakiridis Aeolos Plus, Schiit Bifrost2, Allo DigiOne Signature, Project Debut Carbon Evo, Projrect Phono

thanks guys!