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blorg t1_iuidrqb wrote

AZ09/Pro is a lot cheaper, more comfortable, and will fit his KZ ZS10 Pro a lot better, it's specifically designed for that connector. I doubt there would be any discernable sound difference particularly not on that IEM. I have all of UTWS5, AZ09, AZ09 Pro and ZS10 Pro. If I were him, I'd get the AZ09 Pro.

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