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I have a NAD on order and have 60 days to compare it to my DIY Ncore 400. The NAD is larger and heavier (including internal heat sinks, which mine does not have) and includes the NAD special sauce. Will be interesting to hear if there is a difference that I prefer.
I returned the NAD and love to see your results against the DIY ncores. M22 is nicely built and looks very classy. I don't like the touch to power thing but it is personal taste.
... Many amps, especially SS, takes at least 200 hours to break-in and Class D amps needs to be left on 24 hours every day.
Class D amps needs to be left on 24 hours every day.
indeed. i don't listen to equipment unless it's played music for about 2 weeks, pretty much leave it on all the time when i leave the house. it probably has just as much to do with my ears adjusting to something "different".in my case it was compounded by the fact i got the M22 and new speakers at the exact same time, and the combo definitely needed several hundred hours. initially i was quite underwhelmed. that has since changed and i think the combo phenomenal.
No, they don't, and it might not be a good idea to do so, as you will shorten their life.
According to my ears they do.
That is of course a statement that is not contestable (at least if we assume that the term "ears" covers the whole psychoperceptive system as well), but I just want to point out that a system that would last 40 years with a daily usage of 2 hours per day every day will last less than 4 years of 24/7. Of course, the expected lifetime is very much dependent on typical running temperatures too.
Then I will go buy another one.
Please explain to me what wears out?
Break in is a reality. It takes about 50 hours to burn in a path of least resistance of the conductors and then the forming of the caps. The dielectric requires forming which takes depending on cap 200 hours or more to form.
The first things to go seem to be the electrolytic capacitors in the smps. Any pointers to references?
After about 10 years caps can fail with normal usage.
And is your "normal usage" 24/7 or a couple of hours per day?
The class "D" hybrid amps are on 24/7 [ tube section off ] CDP o [ tubed analog section off], phono stage power supply on 24/7, preamp [tubed] off. My listening is 5 hours or so a day. Dailey routine is turn off what is off. Let settle for 15 minutes then play for a hour to bring to operating temp. and then listen.
Every month a demag disc is used to rid magnetic build up since most gear on 24/7.
How many hours are you putting on these amps? Many amps, especially SS, takes at least 200 hours to break-in and Class D amps needs to be left on 24 hours every day.
but now i have turned on the auto-standby feature. some claim that the process of turning a device on and off is more stressful that just leaving it on all of the time.
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