+1 @rick_n room acoustic treatment -- Without a doubt my best purchase was the MEN 220 Room Correction system. My listening space could not be treated with acoustic panels as it already had wall-to-wall bookcases. The books provide a basic treatment, but surprisingly not anywhere near the revealing benefit of the MEN 220 automatic correction. As a bonus, it also provides active crossover management for my two REL S/510 subs and can shift the sound field with a touch of the remote to change sweet spots in the room.
Your greatest high end audio purchase!!!
My audiophile journey has extended to over 40 of adventurous sonic delight. Over the coarse of my over 40 year journey as an audiophile, like so my others, I cycled through a multitude of speakers, amps, cables, etc,. Now that I’m an old guy, I’ve pretty much settled on my "End-Game" audio system for the long haul, primarily because I simply love the way it sounds, and also because, at this juncture, I no longer have the will, nor do I have the desire to continue the crazy (but fun) merry-go-round of audio components in and out like I did in years past (my spouse and my wallet thank me). When I look back on all the high-speed audio gear that I’ve owned down through the years, and after giving it much insightful thought, I’ve come to the conclusion that, after everything was said and done, my beloved Revel Salon 2 speakers were my overall most pleasurable and greatest purchase of all. What was yours?