is usb audio enabled on zenfone 2?

hi

i recently bought a chord mojo as an amplifier for my headphones. i tested it on the zenfone 2 and i find out that i can only play audio if played through usb audio player pro but i couldn't play any audio through power amp, spotify, mx player pro, youtube, etc. i thought that usb audio is already enabled for lollipop so i was expecting that this available already for all sources. do i need to download additional drivers?

thanks

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