Tried these using different systems and found great playback in Yotube. Optimized my OS and sound card. Am searching for a healthy widget to help with graphic equaliser as I like my bass. They are light but grippy and for normal sized heads. My head is swollen at times but these stretch to fit. Would like a volume adjust thing for perfection.
Not very powerful although it says it is. It's as effective as quick wipe with a hot cloth. The cloth cover is flimsy (I expect most are) and is a good bargain for a 'top polish' but not for a deep clean.