What is your next upgrade going to be ?

I just got Wywires Diamond RCAs that replaced Wywires Platinum. Big upgrade, and I have a modest set up. Bought used, of course.
A couple of weeks ago I added a Core Power DeepCore to my Equi=Core 1800. There's a significant upgrade in the extension and definition of the bass.

Next, I hope to upgrade from an Audio Note M2 linestage to a M3.

 Recently added IsoAcoustics Gaia footers to my speakers. Color me very impressed.