Anyone experience any Op amp rolling?

If an individual reads a broad range of reports on Op Amp usage their is usually to be found the Strong Suggestion a Op Amp needs to have approx' 100 hours of usage to get to the place they are sounding even and coherent across the frequency range.

I stand by this 100 hour requirement as the suggestion for the Burson V6.

Swapping out Op Amp's with a short term usage as the demo' period is most likely to produce an incomplete assessment of the Op Amps capability when used in a particular circuit.  

Just seeing this thread now, thus the late reply.

I have no experience with the SS2590s. These are large opamps that I would use only with great care in a component with a closed case (assuming they fit). They're described as being powerful. Someone posted about his experience rolling the SS2590s into the Geshelli DAC. One of his comments stuck with me--said the volume/gain of the amps single-ended output rose noticeably vs the XLR outputs. That means more power, and more power probably means more heat...?

I do, however, have experience with Sparkos' SS3602 dual opamps, I rolled a pair into the preamp/output PCB of the Violectric V281, which has been my go-to preamp for my main office system for years; and a couple weeks ago, I rolled a pair into the headphone outputs of the Violectric V280.’

The sonic results with the V281 were immediate and positive, though admittedly fairly subtle, not earth-shaking. I’m still evaluating the sonic effects of these opamps in the V280.

I’ve rolled other opamps before, but these Sparkos' are the best I’ve heard. I’d love to try the SS2590s, but am hesitant only for the reasons given above.

@gdaddy1  Thanks so much.  Will do!  I'll prolly get both and compare.

@bbarten   Be aware that the Burson V7 are supposed to be even better than the Sparkos 3602 and the same price. (if they fit size wise.)

I wonder what the difference is between V7 Burson and the Sparkos ss2590 top of the line. Please check those out. I'll know very shortly. 

@gdaddy1  That's awesome on the class A part!  I've heard a lot of good things about Geshelli Labs.  Their stuff is quite different it seems.  I might have to bite the bullet on at least one (pair) of the Sparkos or Burson chips.  Maybe the Sparkos first based on @olds1959special 's comment.  Thanks olds!

Thanks for the link!

I put Sparkos SS3602 op amps (5 of them) into my Fosi Audio ZA3 amp. It made a BIG difference! The stock op-amps made it sound pretty bad.

@bbarten   Yes, currently experimenting. I find class 'A' mode to be the most dynamic and punchy. In January, at the audio show in Tampa, there was quite a buzz about Geshelli labs having a socketed DAC the J2. Easy plug in and out.

I recently came across a video where iiWi put a Sparkos ss3602 an Aune X8 DAC and reported that it boosted the performance to the level of $1000 DACS. My curiosity was peaked. I purchased an Aune X8 that also has an open socket to easily change op amps.

Yes, the performance is WAY better. I'm curious how the best ss2590 Sparkos performs. Supposed to be even better. Also the new Burson V7 Vivid. These op amps push these modestly priced units into a whole new level.

Check it out...

https://www.youtube.com/watch?v=nkO0yG9g1FI

The reply thing isn't working.  gdaddy1...are you saying you actually rolled yours?  One thing I've wondered about is power.  Is it affected by being in class A mode?  Can you comment on differences in the ones you tried?  I've seen those you mentioned and was curious if worth it.  Thanks for the post and in advance for a reply.  :-)

About two years ago I was doing some mods to my Hagerman Bugle 3 phono stage, and definitely experimented with several in different op amp positions of that circuit.

Other than upgrading the single op amp in a cheap Pyle phono section, the Hagerman is my first and only foray into OA rolling. It’s not so different than tube rolling in that there are subtle differences, and they can sound different in different circuits. Like tubes, they all have a range of voltages and functions that they excel and waiver in. It was fun and educational, and not as expensive as tube rolling!

I recall that being a big thing 6 or 7 years ago when that Burson amp was popular...for about 5 minutes.