HiFiMAN Svanar JR Wireless Earphones The HiFi Man Svanar Wireless JR Earphones are the best value of the three versions of the HiFi Man Svanar Wireless Earphones. They differ in having a Class A/B amplifier and a standard DAC. They also have the LDAC hi-res Bluetooth codec built-in. Notably, the renowned HiFi man topology diaphragm is used for detailed and accurate sound. Bluetooth connection to a device is simple and touch operation is used to control playback or answer the phone. There is also active noise cancellation and a 7-hour battery life. Lastly, the charging unit can be used up to three times before it needs recharging. HIFI Man topology diaphragm The HiFi Man Svanar Wireless JR Earphones use the Dr Bian Fang-developed topology diaphragm. This features a coating .