What is the most difficult component to upgrade


I haven't had much difficulty determining an upgrade path
for the components of my system EXCEPT for my preamp.
I have heard many. I have heard differences. But not
anything that says "I am the one". For other components,
I do not have the same problem.

Wondering where others have encountered an impasse in their
upgrade strategy.
judit
KF I agree, the preamp has always made the biggest difference in my system the amp was second with source (digital) third. The toughest thing for me to spend additional upgrade money is cables. One I got to a certain level of cable any upgrade had little if any impact on my system.
Check out the tread on Preamp of the Century. Buy a Supratek preamp and you will be VERY HAPPY. The only downside is that you have to be very patient. This preamp is handemade one at a time in Western Australia. The wait is 4 to 6 months. It is the most musical and the most beautiful preamp I have ever encountered. You will learn a lot from the thread.
...and it has as much if not more impact on the sound as anything else in the system!
Speakers. It is very hard for me to audition them in my room with my front end. I can hear them in other systems and in other rooms but how will they sound in my room? OTOH, I can swap out a pre/amp/cdp with relative ease. It is amazing how much difference a good pre can make. I second Slowhand on the Supratek. It was worth the 6 month wait. Thanks for starting that thread Slowhand, it has forever changed my music system.
Regards,
Patrick