7Hz Legato is a brand new dual-driver in-ear monitor featuring two high-performance dynamic drivers on each side. The pair houses a 12mm and another 6mm dynamic driver where the 12mm one acts as a woofer and produces a powerful lower-end response, the 6mm driver here is kept responsible for exceptional midrange clarity and treble response. With professional tuning and precise adjustments, 7Hz Legato packs a powerful and lively sound that complements different genres of music well!!