I bought two of these to take on a cruise to Mexico. I ran one set off my iPhone 8+ and let my best friend use the other off my iPad 6gen - both running Tidal downloads at 16/44.1. I had low expectations but the Sennheisers worked great - good sound quality, reasonably good isolation and very comfortable outside on the deck or in the air conditioned cabin. My friend was very impressed and will be using them at home with a number of different products. I have Sennheiser HD600's at home as well as Etymotic ER3SE's (much better sound and isolation) so for me these will be used occasionally when wireless is more important than sound quality. For the money I was truly impressed - $100 each shipped free from B&H (no tax except NJ/NY)
note low 18 ohm impedance if you plan on using them wired:
https://en-us.sennheiser.com/wireless-headphones-bluetooth-hd-4-40-bt
InnerFidelity reviews:
https://www.innerfidelity.com/content/innerfidelitys-wall-fame-wireless
https://www.innerfidelity.com/conte...fordable-over-ear-sealed-bluetooth-headphones
note low 18 ohm impedance if you plan on using them wired:
https://en-us.sennheiser.com/wireless-headphones-bluetooth-hd-4-40-bt
InnerFidelity reviews:
https://www.innerfidelity.com/content/innerfidelitys-wall-fame-wireless
https://www.innerfidelity.com/conte...fordable-over-ear-sealed-bluetooth-headphones