Reynolds853, Could it be that ARC's comment was more about the high cost of shipping & repairs for this heavy early SS model, relative to moving up to something newer? AFAIK, ARC still likes to promote its support for every product they ever made.
Also ARC's relatively brief flirtation with SS may account for their dismissive attitude about D350. IMO it is a shame that ARC pretty much abandoned SS after some promising early efforts. For example I have held on to a PH-2 MM phono stage that I purchased in the mid-'90s and have been experimentally updating with many better piece parts. The parts mods take the piece close to current reference standards, and IMO only serve to validate the strength of the original circuit design.