The AH-C820 Dual Driver In-Ear Headphones from Denon incorporate Double Air Compression Driver technology for powerful bass and clarity. It uses two 11.5mm drivers, one in front of the other, to move more air and thus deliver powerful, low-distortion bass. It also uses separate wires from the plug to each driver, for signal purity. Denon's Acoustic Optimizer technology helps equalize the air-pressure both in front of and behind the driver.
Denon's Radial Cascade Damper system reduces cable-transmitted vibration noise, enabling you to enjoy studio-quality music on the go. In addition, the AH-C820 is fitted with Comply TX-500 eartips, which combine with the ergonomically-shaped housings to give a secure fit and maximum isolation from external noise. Four sizes of silicon eartips are also provided, along with a carrying case and cable clip.
The AH-C720 can also be used with the dedicated Denon Audio Application for iOS and Android that allows you to enhance and tune the sound to your taste. The app also offers an improved player interface and allows the user to access over 70,000 radio stations and 2 million on-demand programs via the TuneIn Internet Radio platform.