Vinnie
do you do a final listening test to the the amps /mods that leave your "factory/office" and/or have you (partly) delegated it to ears you trust?
I am just curious
Let me explain
the more mundane a product is, the more mainstream quality filters can be applied to check the final product. The more special and refined or supreme high quality the product becomes, the less default ears or procedures can guarantee the high level of quality. That is why every single Porsche is tested by a company "race"driver before it leaves the compound. That is why the best Bybees up until shortly, were still made by the high age master himself

Kyrill