My cShells have 3.1-4.5mm vents and it has the M Receiver / AV. I’m not entirely sure if they are AOV, but if I had to guess, I’d say yes they are?
The cShells are awesome because there’s no itch (as @wkroeger mentioned), they’re durable, and I get better audio experience with them. The rough surface and because of how deep the mold are where it continues past the first bend, allow the receivers to stay in my ears and have better grip.
For the new Sphere RICs, I will have to get new titanium cShells that are compatible as the new ones have 8 pins as opposed to the traditional 3 pins.
