Sony WF-C510 True Wireless Earbuds (Open Box) phono stage It employs four completely independent

It employs four completely independent amplifier circuits

From classical to electronic

Hi-res heaven

Frequency response @ 44

the audible improvement over a stock cable can be heard and easily measured

Sony WF-C510 True Wireless Earbuds (Open Box) phono stage It employs four completely independentWF C510 True Wireless Earbuds Key Features at a Glance Compact and lightweight for comfort all day long. Up to 11 hours of battery life, with up to another 11 hours in the charging case. 2 Multipoint Connection lets you pair to two Bluetooth devices simultaneously. 1 Stay present with Ambient Sound Mode. Great sound quality and a range of customizable EQ presets. Superior sound quality. Easy button operation. Charging cable sold separately. Compact.