All are essentially useless as a visual and audible tile finder. The [Apple MFi Certified] AUX Cord for iPhone provides clear, consistent sound, at literally a fraction of the price I paid for the Insignia cord. ;)So to end, let me re-frame your expectations. (My first pair were not like that. It has been a great addition to my home gym. rumble of a plane), but it doesnt do much for me in a work/office environment (sporadic noises which may be higher pitched). An amp definitely improves the sound, its like 90% of an amped WS1100is. My wife loves these worked perfectly. They are attractive and not bulky as some other velcro sandals Ive seen. I also use these headphones for calls on my blackberry, other headphones Ive tried havent been compatible and the Blackberry phones are rubbish - the Bose Quiet Comfort phones are amazingly comfortable and crystal clear, exactly what you need on an hour long call.