- Oct 14, 2013
Totally love the HE-500 with my 1983 6H30P-DR and C3GS tubes. Hope the 5687 tubes I have ordered come any close to that.
Besides this, I found that with the HD800, my Sylvania 6SN7WGT brown base tubes have a similar signature to the 6H30P-DRs.
I found the 5687's to be better than any 6sn7/6f8g tubes that I tried. Hope you like them as much as I do