M5-1D universal/custom

https://www.adv-sound.com/products/m5-1d
https://www.adv-sound.com/collections/wired-earphones/products/m5-1d-custom

Stumbled across these on a can’t fall asleep internet binge. Can’t seem to find much about them one good review on the website. Anyone know anything about how they stack up? Or maybe know where I could find a review cuz my Google fu didn’t bring anything up.

Well they are made by the people who made the advanced alphas but I was not aware of this specific iem

It’s probably good, but I don’t know anything about it

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