Unique Melody MASON In-ear Monitor (IEM) was jointly developed and completed by Unique Melody, and Mix Wave. The IEM was mainly designed for the Japanese market. It uses 12 BA drivers; 4 x Low, 4 x Mid, 2 x High, 2 x Super-high. The 'MASON 2' model was developed and completed in about two years. Succeeding to the earlier popular 'MASON' model.
12 BA drivers, 4 x Low, 4 x Mid, 2 x High, 2 x Super-high
Twin vent holes
Platinum-plated metal tube
Frequency response, 20 Hz ~ 20 kHz
Sensitivity, 111.4 dB
Impedance, 22.1 Ohm