Yamaha EP-E70A Wireless Noise-Cancelling Earphones - Discontinued open-back 6V / 90 mW(@ 600

6V / 90 mW(@ 600 Ohm) > 7

To that we simply said

It offers class-leading Equivalent Series Resistance (ESR)

Wire type: OFC - 99

Yamaha EP-E70A Wireless Noise-Cancelling Earphones - Discontinued open-back 6V / 90 mW(@ 600Listening Optimizer: optimizes the sound in real time, adapting to you and your environment Advanced ANC: Cut the noise, not the music with this Yamaha exclusive Active Noise Cancelling technology that leaves your music pure and untouched Ambient Sound: choose when you need to be aware of your surroundings Listening Care: intelligent equalization for full range sound at lower listening volumes, including dynamic monitoring of content and background