Another leap on our own shoulders: Based on the success of current flagship RS10, we reconsidered some key concepts of the designs. Even though RS10 hold its ground as a reference in ear monitor, complex crossover makes it hard to drive, So we start to develop an avant garde BA In Ear Monitor with easier drive requirements. After one year and half of research we bring the all new RS5, a 5 driver BA with similar reference sound performance. Not only that, brand new driver configuration and crossover make RS5 very easy to drive, you can hear satisfactory dynamics even with conventional mobile phones.. With great sound comes great design requirements. RS5 not only effectively combines acoustical filters with crossover to make the BA drivers produce excellent dynamics under the requirement of nearly perfect frequency response and almost linear phase, this is truly a remarkable feat of audio engineering.. The design concept for RS5 is to use effective architecture to make simple driver configurations sound extraordinary, pushing efficiency of BA drivers in the earphones. This also makes RS5 capable to reproduce astounding dynamic and rich detail with accurate frequency and phase.