How much benefit would I gain from bypassing the preamp in my caimain seg and using a standalone preamp.

I'm currently using an anker powered chromecast audio for Spotify and my PC for Flacs into my linear psu powered caiman seg. Caiman seg into my quad 306 and this is driving my upgraded Klipsch KG4.5's very nicely indeed. By upgraded I've renewed all caps on the crossovers and have the Bob Crites titanium diaphagms

What difference if any would I hear from a dedicated preamp? Or I am just doing what we all do with HiFi and trying to over complicate matters?