How long does it take to break in coupling caps?


Just changed 4 coupling caps on Carry SLI-80 integrated amp.  How long normally does it take to break in those coupling caps.  Is sound really going to be better?

It was ClarityCap ESA to ClarityCap CMR.

Thank you,

Hi Eddy,

I am a big fan of Clarity in speakers but haven’t used anything that fancy inside electronics, only in speakers. The ESA's are relatively darker than the CMR's.

My experience with speakers is that first 48-72 hours are the biggest change. I won’t say they get better, but the rep called it less "splashy" and I agree with that. They start almost overly sibilant, with exaggerated high-hat range.

Takes about a week of play for them to loose that "splashiness" and become perfectly neutral.


Been 10 hrs now and still long way to go.  Just like you said it is not as dark as ESA, less warm.  I like warmer sound so I am not sure if made a right decision.    

You'll hear improvement out to 200+ hours with CMR, though by 100 hours you'll be in a position to judge them.

ClarityCap OEM Sales

Dave, Thank you very much for you reply including many info regarding ClarityCap by PM.
I think you will really like the CMR, but if not, you may want to go with the relatively new CSA. It is essentially the ESA line with the copper matrix.

With larger CMR caps I have very good results using copper film bypass caps from Audyn, but others may use Jupiter or Duelund. Watch the physical sizes!!

Do nothing until at least 1 week of playing though! :)


Thank you, Erik.  I am just going to leave it play 5 hrs a day while I am not listening.  Any volume would do it right?
break in generally goes like:

dull and wide mono...

to exaggerated mid-high treble/mids that are blunted and gritty, that exaggerate fine detail in a blunt phasey mildly metallic way that can sound huge - soundstage wise..

to darker or calmer but cleaner, faster, leaner.. with the grit falling away and opening finer details

then finally... to a balanced warm clean final burn in condition. Whatever that may be -- for the given item. not specifically the capacitors in question.
Thank you, teo_audio.  Is pink noise to break in any good?  I did pink noise for my speakers.
pink noise is fine. Wideband is the deal. and pink noise is generally that. Ie, 20hz-20khz pink noise.