These are legitimate IEMs, based on the same design as the custom InEarz Audio monitors, but placed into a universal fit shell. They will outperform just about anything on the market, and because of the ADEL Technology, they will be safer for your ears. You can use them with any phone, including the new iPhones with the headphone adapter. Musicians can plug them directly into their wireless belt pack, and audiophiles can plug them into their DAC. They have been tested and proven for live music, audio mixing, and just all around listening enjoyment.