sweet speakers and amplifier!
i suggest my current preamp- the two chassis Cary Audio SLP-05 if you want a truly spatial sound stage.
no matter which amp I have used with it over the years it never fails to deliver a huge top to bottom side to side sound stage with detailed cues of the location of musical elements in space.
there are many NOS 6SN7 tubes you can swap as well as NOS GZ34 tube power rectifier. All class A triode design with ultra low noise from the 2nd chassis power supply with premium R-core transformer. The sound is also incredibly energetic and dynamic.