Looks like you’ve jumped the gun. I think a more pertinent question is whether you want to stick with all Mcintosh or Naim. If the former which appear to be the case, then the 272 needs to go. Something like an NDX or NDS will be more suitable but you would need to check compatibility with the Mcintosh C2500 preamp.
FWIW a Naim preamp works best with a Naim amp and power supplies. The 272 is often matched with XPS or 555PS(for ultimate sound quality), together with the matching power amp either the NAP250DR or 300.
FWIW a Naim preamp works best with a Naim amp and power supplies. The 272 is often matched with XPS or 555PS(for ultimate sound quality), together with the matching power amp either the NAP250DR or 300.