Sorry late reply - I immediately threw Sparkos SS3602 op amps in my ZA3 and never even heard the stock op amps. I realized that I should use these and make sure all is good for a while before rolling other op amps. I have some Burson V7 Vivid to try as well.
There was no reason to burn in other...
I know what I’m playing with this weekend! It will take some patience to burn these in before rolling the MUSES02 op amps they sent from the stretch goal.