ARC REF 750

I have both the Ref 150 SE and Ref 80S with a Ref 6. The two amps have a very similar presentation. They both need a TON of break-in. 500-800 hours. I was a bit let down by the brand new Ref 80S at first. I was not patient enough. I can't prove this but I believe it is not just hours but also how many times it has been cycled on and off that accomplishes complete burn-in. ARC says many hours are needed in the manuals. 

I am sure you know this but the quality of the IC's between your Ref 6 and amps will be crucial. I prefer Cardas Clear Beyond XLR's. Again, ARC emphasizes the quality of the IC's in the manual. 

@fsonicsmith1 Hi. The ARC REF 750 is not brand new. It’s 7 years old so it is burned in. As far as all my ICs.they are Straight Wire Crescendos. Speaker cables are Straight wire Crescendo. Power cords for amps are Shunyata King cobra CX. Preamp 6 is Straight wire Signa HC power cord. Rega ISIS is Straight wire Sigma digital. 👍

@rhg3  Thanks. I’m also looking forward to my listening impressions 👍

@fsonicsmith1 

I have broken in three Audio Research Reference 160s and found they are not fully broken in until 1,000 hours. The pattern is the same on each. I will say that most of the breakin occurs in the first 600 hours and then trails off. But there is a pretty noticeable difference between 600, 800 and 1,000. 

They are beasts. Banks and banks of capacitors though the huge C core trannies need to burn in as well.