Is upgrading pre worth it?


I Own a Denon 7.2 receiver. I am using it for a pre.  I have an st100 Rogue amp. What difference would  a nice pre make?  for 1500 used Rogue pre would I get 1.5k worth of sound.
128x128kingdombuildingcon
Its not close,  if the funds are not a problem,  I wouldn't blink to getting a good pre
You're not hearing what your amp is capable of. I agree with others that the preamp has more to do with the sound of a system over an amp; they're both important. I've heard ok amps sound very good with a great preamp, but not a great amp sound great with an ok preamp. Try the Rogue pre... can't go wrong with that brand.
Wow.. ok learning something here. NOW.. rogue has an the pre99 super magnum. that would be the equel to my st100. what would be a good soild state that might be better. IS it ok to mix solid state pre and tube amp of different brands?