But Frank, you're not talking about low level distortion. You're talking about something you discovered "getting your hands dirty" while fiddling about "under the hood" that rendered all the various noises, distortions and inaccuracies of every recording from Robert Johnson to Justin Bieber inaudible, making all the recordings of all time musical, wonderful and highly listenable right up to the volume limits of the system. You're saying you turned some screw under that hood and performed an audio miracle.The hard bit is that you MUST be absolutely meticulous in your efforts to eliminate that low level distortion, and that is why seemingly only a very, very small number of people reap the benefits ...
Very specific information will be required or no, the little indulgence cannot be forgiven and I'll just have to assume that the screw was, indeed, turned under you head's hood. Not that there's anything wrong with that. My ability to thoroughly enjoy recordings that are, by modern standards, barely listenable, is absolutely in my head. But it doesn't require some secret tweak (other than the scotch, or bourbon in my case), and I'm not coming onto an audiophile forum and claiming I found it in my system.