JAM by Duelund

They do need more time to break in with music.  500 hours with music. Pretty sure your cooker time fell short of that. These do take all of 500 hours to sound their best. Not sure what the cooker equivalent of 500 hours is? Not sure if it even gives the same result? 

Yes, I'm agreed. Cooker works different compared to break in with music.
Very long  break in with music always makes sound better and long break in with cooker sometimes makes sound too dull or bright.
But in this case with Jupiter capacitors, cooker helped me to pass quickly the most annoying first stage of the break in.
I ordered a pair of 1uF Jupiter Cu capacitors for my phono-stage (build based on EAR834 schematics) output stage.
The thing that impressed me most in Jupiter Cu is exceptional micro-dynamic that makes classical music sound very emotional.

Yes that is a wonderful thing to get most of the burn in behind you once a part is put in place. I do wish a had such a device.

FryBaby2 is not to expensive. It costed me less than a pair of 1uF Jupiter Cu.

I will look at it now.