What's your experience with Channel Separation?

Channel Separation is an important specification for Phono Cartridges.

Channel Balance is also important.

Of course, other 'qualities' of a cartridge count, but keep in mind, any 'preferred' sound quality of any cartridge's Imaging is aided by these two 'relatively achievable' characteristics.

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Consider that all imaging is Phantom, created solely by the relative volume of L volume to R volume.

Channel separation gives the preamp/amp/speakers help maintaining the intended Phantom Imaging.

Tight channel balance also gives a more precise signal/volume difference at the start. A wider image combined with tight control gives more distinction, sharper perception of particular instrument locations.

When you view a line of cartridges, observe, as price goes up, separation specs get wider, and balance specs get tighter.

I have no idea how to tell crosstalk from a natural part of a stereo mix just by listening  so honestly it’s not something I pay much attention to. Maybe I should? Bad audiophile!

Maybe if a reviewer measures and points out a bad measure for crosstalk I might pay more attention to some extent depending on the severity of the crime.

Phono cartridges are a great example of how little this spec seems to matter, relatively.

I mean, I think the best phono cartridges get to ~ 45 dB, right?? Compared to that almost any preamp will do well.

After decades of experience and careful analysis, I’ve determined that the measurable channel separation of a "typical" audiophile headphone is ... the width of your head.

@waytoomuchstuff 

This is true, so reviewers like myself with big heads should have more clout!