Analogue only preamp ideas? - no need for internal DAC!

So making progress in my quest for perfection.

have a great dac, Chord Tt2
great amp Mcintosh great speakers, B&W 804 D3And a Roon Nucleus.

but I have a subpar avr,

An analogue only preamp seems ideal and so many have a standalone dac, so analogue preamp seems a good idea.

Mcintosh has some units that seem quite nice, eg C70 tube.  Seems tube is a great way to go but tubeless has pros too.

Need some ideas. Thanks