3rd Generation Innovative “XUN-7” Dynamic Driver & Multiple BA Combination Equipped with independently R&D high-performance innovation "XUN-7"dynamic driver, the CCA HM20 features three 50024s multiple BA combinations and a 30019s BA driver on each side to achieve the prefer clear & powerful bass, natural vocals, and smooth treble extension. This device also utilizes a metal meshed protector to provide more excellent audio performance to users. 3D Printed Sound Duct Structure CCA HM20 inside earpiece shells characterizes a 3D printed sound duct structure design, which use the 4th generation DLP high precision device to ensure the better precision. The physical band-pass and low-pass filtering relying on 3D printing forms a hybrid three-frequency structure, which is divided by the RC power frequency division. The physical band-pass filtering can handle the lower and mid frequencies, while low-pass filtering can limit the Q value of mid-high frequencies. Inside the earpieces, their shells are designed into a 3D printed sound duct structure, which makes the drivers move smooth and ensure there is no distortion in the sound output. High-end Military Grade Zinc Alloy Panel Featuring unique design into mosaic crafts, HM20 is made of 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, this device presents a dazzling appearance, comparable to luxury jewelry, and its hardness is comparable to military industry, strong and durable. Replaceable Cable Design & & High-Isolation Performance Ear tips Easily switching to be wireless mode, the CCA employs replaceable cable design, featuring 0.75mm standard gold-plated PIN connectors. These connectors can be upgrade to the wireless version with CCA BTX. After CCA professional acoustics team meticulously tuning, the HM20 finally comes up with stereo surround HiFi audio performance. Besides, HM20 has two skin friendly transparent cavity. The HM20 characterizes ergonomic design, which is comfortable to wear. When wearing around the ear, it is close to the ear socket, not easy to fall off. High-Purity Silver-Plated Cable To lower distortion, the CCA HM20 adopts high-purity silver-plated cables. And their layers can enhance the resolution and reduce the loss during signal transmission. It is worth mentioning that the new cable design effectively can resist tangling and knotting. Besides, its mic version features a HD-Mic for smoothly communication, which is easy to control through on button. Such design can help users make high-definition calls without noise.
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