I attach my headphones directly to my Onkyo receiver to power it sufficiently; my headphones are the Beyerdynamic DT 880 Premium 250 Ohm headphones. The straps are a bit annoying but are adjustable. Very bright Perfect handy tip storing solution. I love how there is so much room on the inside so that even if you drop the case, it wont affect your earbuds or your hard apple ear pod case(or whatever brand you have) because there is so much room on the inside. I got this to use for my job-i work from home-and i take a lot of calls and have meetings so my phone battery drains quickly throughout the day. they are ok, they are made with a stretchy band. I don’t have to worry about my case getting scratched up in my handbag. The mic quality is 8/10, again very solid for being an add-on. The quality of the lens seems very good and provides a clear, shape image on par with my Maui Jims that I use for golf.