Pros:  Good sound, clean amplification, good driving power, lightweight and comfortable, price, many pin outs [2-pin (standard CIEM, UE CIEM, UE TF10,), MMCX, IE-8/80, AudioTechnica (IM, LS series), FitEar] Cons: Pin fit (standard 2-pin CIEM), Bluetooth noise floor and EMI (Bluetooth general flaw), no aptX, not sweatproof, limited battery life List Price: $65 at time... Continue Reading →