How much do I need to spend to get a preamp that sounds better than no preamp?

Crap! I must have hearing problems. I thought the darned Oppo sounded pretty good!

@honashagen 
you should consider any specific recommendation of equipment as anecdotal as it may not sound nearly as impressive in your system. 

Although unlikely, it’s absolutely possible that a $3k tube preamp won’t impress you as much as a $1k solid state preamp. 

Best to stick your toe in the water, buy something returnable and find out what works for you in your system in your room with your music.... all while realizing it may take a few tweaks to get it right. 

I just bid on a Pass Labs X-2.5. Did I do a bad thing?

Not much IME.