Having been completely familiar with both products, I first thought the Post was kidding in asking for a comparison...mainly because there is NO comparison.
MAC is good gear, and some swear by it...I understand this...appreciate that certain 'sound' or look has great, sometimes even Universal appeal...hence Mac's years of success. However....however...
I went to Binghamton (long time ago) McMasters Training for their seminar over a couple of days.
They do a great and admirable job with their equipment...I came to be a big fan of their products...BIG Fan...but I can make no pretense that there's any comparison in sound between the Mac and the Gryphon.
Gryphon, to my ear, borders on the mystical...sounds silly, but true...it's so alluring (think tied to the mast in Homer's work, lol).
I owned a Callisto 2100, not even the 'big one' the 2200...and it slayed, Ayre, Conrad Johnson, (sorry Bill and Lew), Krell, Mac, separates and it was not close...AND this was not MY single impressions, but several people over the course of several days of a/b/c/d/ listening sessions in a store in Nashville, TN.
There's a thing that happens in audio, in which one passes over the obvious, and music becomes so realisitic and fun, and life like that the illusion is almost complete...it doesn't happen easily or quickly, but it can and does happen...so it was with Gryphon.
Funny...even devotees of the other gear would simply shake their head and say, 'Wow...that's not close'...words to that effect...surprised, supremely surprised at the difference.
Back some 20 years ago, I sold 11 of the 13 Gryphon preamps (rosewood knobs, gold flashed back plates, and $9000. back when $9K was more than now) that they brought into the US.
I literally, could hook an Adcom 555 Amp to the Gryphon preamp and make it sound remarkable...this forever changed my understanding of preamps and their value to a system.
Your last comment, Delfineck...'I don't like the equipment where you need only audiophile CD's to listen'....hit the mark with me.
When I designed the LSA speakers, the acid test was...can I listen to any 'worthy music'...and have a musical experience?
So it is with Gryphon...this is NO COMPARISON...Gryphon is in a different category of excellence when compared to Mac.
These words and thoughts transcend opinion.
Good listening,
Larry