High end stereo preamps? Worth it?

There are always compromises to all in one designs.  For example my DAC has a 30 lb power supply, preamp separated power supply so all in ones don't compete.  That is not to say that all in ones cannot sound good.  The Vinnie Rossi all in one is a very good sounding unit but it is also a DHT design which is what I prefer.

Happy Listening.

Yes.

it depends on the room but if you’re good with the room, then yes for sure.

i went from Rotel preamp to rogue to Cary 98 then Cary 05 then arc 5se then finally audio research reference 40th anniversary.

the arc 40 is the best preamp I’ve ever owned and it’s hands down one of the best moves I’ve made.

How about the Benchmark (LA4)?   I didn’t see it on anyone’s list above, but I have heard a few good things about it personally. Just asking for opinions, I have no horse in this race.
— Jim

Parasound Halo JC2BP provides a sublime preparation of the signal at $4,500.