What equipment do you most regret parting with??

My CJ MF-2500-A The one I should have kept!!!Sweet and Powerful

I regret selling my McIntosh MVP-871, I wish I could have kept it but I really would not be using it today but it was a nice DVD player.

I regret selling my Jeff Rowland Model 3 mono amps (gold finish). Not that I would still be using them because I got into Tube amps, but I would still like to have them. Best solid state amps I have ever owned.

I would have liked to keep all my gear from over the years, but I am not a horder nor a collector plus I usually had to sell the gear to but new gear.

A/D/S speakers- L810s2 in real walnut veneer- really great sound as long as you didn't play them too loud. sold them with the dedicated stands for a song.
BUT i replaced them with A/D/S L1590s2 speakers in Rosewood! after carefully straightening out all the dents in the metal grills and installing a spike kit i was totally thrilled with the added bass and dynamics.
And then i pair of B&W 801s2 became available... BUT after getting them i had to upgrade virtually everything.

Koetsu rosewood signature Platinum cartridge

The Infinity IRS Vs. Nothing has given me the greatest pain in their loss. I have not found a speaker system which had the magic of making concert hall sound in one's friendly nest.