[quote name='largo' timestamp='1456647912' post='2990957']
In my opinion it's the Basschat effect. There are people on this forum that read all the articles & want to try out the next great thing, sometimes it's basses but it's typically amps & cabs. The TH has had its 5 minutes of fame and now there's new stuff being talked about. Mesa Subway & Magellan for amps at the mo' and TKS for cabs.
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Mostly this. Although for some people the TH500 is tonal nirvana (or today's version of it), some of us struggle to get on with the sound and the interactivity of the controls. In my personal case, the TH was incompatible with the cab I owned at the time.
Values are still good, so it makes sense to sell and let someone else get the benefit!