CCA announced its latest flagship IEM the new CCA HM20. The HM20 comes with a hybrid configuration with 16 units of drivers and has an open-back design.
The new CCA HM20 uses 3 x dual 50024s BA, 1 x 30019s BA, and one XUN-7 dynamic driver.
• The 3rd generation “XUN-7” dynamic driver uses a stronger magnetic high-performance diaphragm, so the magnetic flux conversion of XUN-7 is better than that of a traditional size dynamic driver.
• Compared to the traditional standard dynamic magnet gap of around 0.32mm, the new XUN-7 dynamic driver’s magnet gap is only 0.15mm.
• XUN-7 uses the dual magnet and dual cavity design
• XUN-7 has a 5-micron diaphragm thickness.
CCA HM20 shells are designed in a 3D printed sound duct structure design, which uses the 4th generation DLP high precision device for better precision. The physical band-pass and low-pass filtering of the sound duct structure relies on 3D printing to form a hybrid three-frequency structure, which is divided by the RC power frequency division. Physical band-pass filtering handles the lower and mid frequencies, while low-pass filtering limits the Q value of mid-high frequencies. Inside the earpieces, shells are designed into a 3D-printed sound duct structure, which makes the coil movement smooth and ensures there is no distortion in the sound output.
HM20 is made of a high-precision metal die-casting process. It is well polished from the metal shell and has undergone as many as 27 complex processes such as polishing, sandblasting, and electroplating. Finally, its hardness is comparable to the military-grade, strong, and durable.