Can one ever be "done" in this hobby?

Nice attitude on your retirement. It is how I live my semi retired life (by choice) as well. Gotta keep it new and get the thrills. 

Assuming one cares, once you know what your target is and you hit it, its harder to change than not.

Otherwise, not so hard if you are not hitting the target or the target constantly moves.

Then of course most things break or wear out and eventually just need to be replaced, assuming again one still cares.

To each their own.

Thank you folks.  After reading this thread, i put my ear up to the various drivers.....hissy noise in The right Heil AMT tweeter/mid.   Appears to be from my ESS 2142 crossover.  And the quest goes on.  Did my due diligence, unplugged the IC to amp, noise gone.  IC connected to amp but not the ESS xover still no noise.  Unplugged the input to the ESS xover and the noise stayed.

Correction.  The ESS xover is model 2241.  Question for Millercarbon or Geofkaitt or any one.  Considering a tube amp to run the ESS Heil AMT.  I listen at mostly moderate levels.  Current amp is Parasound Zamp.3 at 35w per channel.  There is a Wavebourn on E for 800+shipping, but only 6 watts.  Is that enough power?

mapman mirrors my feelings about hitting the target.I feel that I have, but fooling around with different tube combinations and cheap tweaks keeps things interesting.Finding new music and collecting different versions of a favorite song is fun also.