Audio Research Ref 110 break in period

Fellow owners with first hand knowledge, please let me know what your experience was with the break in period. I understand ARC says it can last 600 hours, but I think that more applies to the brand new stuff with Teflon caps (Anniversary Preamp and Ref 5) though I could be wrong... What stages did you hear and at what points? I am very pleased with mine so far and it only has 60 hours under its belt so far. Curious as to what else I can expect from it.
Both. Brand new unit from ARC with KT120's. Ordered it and within 4 business days it was built and delivered. My dealer approached me with it while auditioning a ARC VS115 and a Mac MC275. According to my dealer it was one of the last few they were building and if I was ready to do it immediately (which I was thankfully) I was able to spec the color I wanted as well. (Black) I feel very fortunate to have been in the right place at the right time.
Indeed! The REF110 is on my upgrade path when I scratch up the cash and sell my VT100 mkii. Enjoy!
Anyone with first hand experience out there?
Would love to hear what stages or changes I can expect from this amplifier once through the intial break as opposed to right out of the box.