Uhrn.... Norm, if that is the case, you are in good company... All solid state amps I have broken in this far (high efficiency class D) have taken between 1,000 and 1,500 hrs to break in.... and even my previous high bias class A/B amp, the venerable Rowland 7M, of which I have been the proud 3rd daddy, took about 24 hrs of steaming before giving its best after its power was cycled down to standby for a couple of days or so.
I suspect that, if I needed instant gratification, I would need to change hobby, or at least target very different amps.
Of course, ever the empiricist, I remain open to possibly discovering a high end SS high-efficiency amp that is not plagued by "late bloom syndrome". Yet for now, ripening cheeses, aging wines, and breaking-in amps... remains just part of the ever patient fun.
Saluti,
G.
