I have older classic Spendors and have rolled many tubes over the years. I have found JJs to be bright and steely, but not refined. Dump them.
try tube rolling to offset the highs, the stock mac jjs can have a bright top.
Spendor D9.2 Run In
Just got new Spendor D9.2's, primarily because of the well regarded midrange, and wanted to know how long the run-in will take based on experience. I generally don't play them loud, but when I do they seem to blare. A bit concerning. Also when played at moderate levels the mids sound tuned high. What is the deal? Thanks