Modified/upgraded crossover, internal wiring and binding posts.

DAC

From DAC to INT-25

Digital from transport to DAC.

Ribbons.  PITA to hook up but worth it(in my system).

All class A and keeps my small cottage nice and toasty.  Worth every penny.

CD Transport

Yes.  I said cutting board.  Had this laying around for years, unused.  Even tried to sell it in a Garage Sale.  No buyers.  They are not cheap.  Someone mentioned using one here so I figured, What do I have to lose?  Placed a few old anti-vibe pucks under it and placed my CD transport on top. DAMM!!  Details, especially the low frequencies, I did not hear before.  Try it.