Zoom h5 audio interface problem

Hey guys, I recently got a zoom h5 field recorder. It has amazing sound when recording guitar to the device.



But, when I use the audio interface mode I get fluctuations in the audio and it makes it sound very tinny.



I have tried it on my MacBook pro retina, my old 2008 MacBook Pro and on a ipad. Same problem.



Does anyone know what I can do so I can use my h5 as a audio interface and get quality sound through usb?

Zoom h5 audio interface problem