The JAIB is powered by one single 10mm dynamic driver, and the housing is made of a combination of brass and stainless steel. This is one of the three models under the series of “JRM” – JAIB, RAIV and MEIZ. These three models are assembled in a combination of 3 pieces. For JAIB, brass was installed at the front and bottom part of the enclosure for creating strong and elastic bass sounds. It works well with music that demands a sense of power and gravity. This is the model under 634ears that delivers the strongest bass.