Clio, Thanks for your thoughtful remarks and for your offer to audition a TRL unit. Perhaps this can be arranged. In defense of TRL's apparent practices, I have heard recently from several good techs how much can be gained by potting or shielding digital circuitry. This is probably the one area I have not personally explored as an amateur modder. I believe the practice is antithetical to the RAM/Audio Consulting nature-boy philosophy exemplified by unshielded wires, distain for Mu-shielded transformers, and preference for wood enclosures. But I need to experiment with this. If the performance improvements are worthwhile, then this may explain how TRL can mod digital economically.
Agreed, there are two sides to every story, and dissappointed customers are everywhere. But one would be justifiably pissed discovering that a modder who had just covered his PCB with epoxy failed to tie down a solder joint.