“ You get what you see. Nothing extra. CNT or "Carbon nano tube" diaphrams/drivers were developed by the Chinese (I studied this) and J.V.C was the first to mass produce it in their IEM "FX" Series. Essentially a 55mm driver dedicated to low frequency . They actually called it a "Subwoofer" (a 30mm driver handles mids and highs) ...” --Hawaiibadboy
the object for band type headphone "live beat system" -- the loading -- junior and senior high schools with high "stream woofer DB (double bass reflex)" resolution which reproduces realistic heavy low-pitched sound -- the junior and senior high schools of the exclusive tuning which enables reproduction of a region -- unit for sound /
Spark High Definition In-ear Headphones are the combination of precision acoustics, unique design and expert ergonomic research. Powerful and accurate acoustics are achieved through high performance dynamic driver and special high definition acoustic filter built-in, resulting in full, explosive bass, intense mid-range and clear treble frequency response that will put a smile on your face...