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burning in capacitors for phono stages

I'm in the process of auditioning various capacitors within my phono preamp. It seems burn in is a 'real' issue with caps. In exploring various means to burn in these caps I found the KAB PreconLP, this device converts line level signals to phono level signals. This allows one to use a cd player and burn in disc to burn in phono stages.

I only need substitute various caps in circuit I want to audition. This seems like a huge advantage over any other cap burn in method I've encountered. You are getting the actual signal your cap will see playing lps. Other burn in methods I've seen may or may not have sufficient voltage and/or combo of AC and DC.
sns
ptmconsulting
1,000 posts
 
A typical CD player sends out 2 volts. If you had a passive preamp you would immediately see that the volume full open would be way too loud. Typically a preamp will send out a lower voltage since the volume would be turned down to a "reasonable" level.

Plus, my way you don't need the preamp or amp turned on at all. Just change out the disk 1-2x a day and you've got a pretty easy burn in device. You can even turn the system on once in a while and hear the changes in the caps over time.

Enjoy,
Bob
sns OP
3,367 posts
 
I have the preamp volume turned up full.

I like the idea of being able to hear the caps as they burn in using the cd player, think I'll give it a try.
Thanks, Scott
johnss
581 posts
 
Yes, Bob has a good point, The main thing you want to do is get some time on the new caps, before you install them if your wish is to avoid in system break in.
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