All amps I am aware of take about two months to settle down and stop being a moving target. AC, the signal, takes about thirty days to settle down and the DC portion of the amp takes a minimum of 45-60 days to settle down. At sixty days you will find most amps are a bit too sweet and most folks look in their cable library to find something brighter than what they used at 30 days....I voiced the JC-1s for complete warm-up and complete break-in and to be just slightly warm of neutral when fully cooked. The unit uses some exotic rectifiers, hyperfast/soft recovery types, that just take a while to settle down. I am not aware of other amps that utilize these except those in the aftermarket that modify amplifiers. The JC-1 is a factory hot rod and is the best we can do in a very powerful SS amp built without much in the way of compromises. Just went through break-in here of my personal set of JC-1s and the nastiest part was as I neared 30 days the amps just got thin in the lower mids/upper bass. They spent almost thirty more days sounding like tube amps and woke up at about two months with an attitude......Oh, I am not a dealer any longer for the amps (ran out of preamp customers more than a year ago) and I do not work for Parasound except on a per job basis.....I wanted Bob to know that the thin sound goes away at a month before he gave up and spent a lot more money for other amps.....
