Phono pre "Break-In" process? Necessary?


Just ordered a new phono preamp from Jolida  (J9II). Is there a break in process I should be aware of? Or do I simply play normal and realistically believe that it will open up as time goes on. Also, how much can one expect this pre will improve over time?


markeetaux
Well, yes but only the live performance anyone could have, Glitter & Doom is on both vinyl (my preference) and redbook CD and is an excellent selection of songs from many (if not all) of the venues in this tour. Two things to keep in mind, Mr. Waits only tours about every seven years or so, and, he is usually very picky about finding nice old opera and concert venues to perform in. His musicians are exemplary as well. If you don’t, you really should own this recording. It is a treat. And it may play very well into what your amp is doing.

Happy Listening!

TLDR (too long, didn't read) ...

I don't know if it was mentioned yet but one of the biggest "break-in offenders" is capacitors.  Some Teflon caps are notorious for taking multiple hundreds of hours and they go through weird stages along the way.  They sometimes get worse before they get better.  I won't get into the why's here (I'm guessing there were contentious statements both for and against, and I don't have time to discuss).

Most capacitors are not like this however and 50 hours 'll do ya fine.  It doesn't hurt to get the manufacturer's take on this.

Jim Hagerman used to sell an inverse RIAA circuit.  I don't know if he still does.  It allowed you to run a CD signal into your phono stage (dropping the gain by ~44dB and inverting the RIAA eq) so you can hear music amplified through it.  50 hours occurs a lot faster when listening to CDs vs. changing 150 record sides ;-)

Of course, if it sounds fine out of the box, it will only get better (one would hope), so you needn't jump through hoops unless you want to.

Cheers,
Thom @ Galibier Design
The "same as live" concept is irrelevant, except you can shoot for timbre and room feeling I suppose (I’ve mixed and recorded hundreds of live concerts from Richie Havens to the Baltimore Consort), and "black backgrounds" exist in a vacuum only. We really have to ban the "black background" term…really…perhaps the most overused and patently useless audio bullshit term since it appeared a few years ago. Maybe "noiseless" is OK…still…the world has ambient sound in it, and "hearing a venue" sort of makes my point. It does. Trust me (!). Is an image stable when you move your head? No, it’s not, but again…live images as a reference are often vague unless you’re sitting on the stage with the musicians (I argue this point often). Good hifi lets the results of the recording engineer’s panning (and mic placement) or lack of same shine through…I get it (and, I do it). I also think great music makes any decent system "disappear," and I have piles of actual acoustic instruments I can play that are within several feet of my "listening" audio rig (and surrounding my home recording rig) and I know what they sound like…I can make un-miked live natural wooden acoustic instruments distort in your face (uh…is that a capacitor or your MAMA), and they come from a "black background" only in somebody’s imagination.
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roger_paul  " ... in order to have speed variations on the turntable the are like those found in amplifier, your TT speed (33 rpm) would have to speed up to 66 rpm in order to produce a harmonic of what ever is in the groove.

Amplifiers that can generate energy at 2 Khz from a 1Khz fundamental experience a very rapid change in velocity causing the fundamental to "slide" up the spectrum and be seen at 2khz and then slide" back to 1Khz.
If it does not slide - then it is digital not analog"

You sound very, very confused. Good luck to you in sorting it all out.