Dear Peter: With al respect to you and IMHO when any device has a good design that conforms with the standards of the audio industry ( in this case the RIAA eq. ) it does not needs any kind of excuses/explanation like the ones that you are given here.
That is not the main subject from my point of view:
my main subject is that in today status the SG response does not conforms according to the RIAA standard eq., I'm sure that you understand perfectly the term/word STANDARD and the whys the RIAA give the precise conformation of the RIAA curve eq.
From my point of view, and please correct me about, your SG design is out of that RIAA standards and is not a device to hear recordings ( LPs ) that were recorded under the RIAA standard eq. Of course that you can hear it in the same manner that we can add an equalizer to our systems but that is not the point.
Peter, I think that all of us really appreciate if you give the answer to this question: could you tell us if the SG was designed to conform with the RIAA standard eq. with which all the LPs were recorded?, please a simple answer: yes or no.
Thank you in advance.
Regards and enjoy the music.
Raul.