Unfortunately, the silver part of the terminal is made of some kind of steel and is magnetic. You don't want this in your stream from your receiver, your best bet is to get something in copper or brass. Yes, it depends on the speaker conductivity and impedance!
Elago AirPods 2 Dust Guard Cover - Gold, US Patent Registered - Compatible With Apple AirPods 2 Wireless Charging Case
27 Review
AirPods 3 Case Cover 2021 Version Soft Silicone Fur Ball Keychain Women Shockproof Protective Visible Front LED Light Pink
24 Review
Soft Silicone AirPods 3 Case Cover With Fur Ball Keychain - Shockproof Protective Cover For 2021 Version Charging Case With Visible Front LED - Ideal For Women And Girls - Light Purple By OULUOQI
20 Review
Protect Your Airpods In Style With Hamile Cute Cover - Black Cow Pattern For Girls, Women, And Boys - Compatible With Apple Airpod 2 & 1 - Portable Keychain Accessories Included
25 Review