Weird audio bug GA-X38-DS4

[AgentOmega]

wierest thing ever but I have an unusual audio distortion on my headphones but not on my powered speakers, it doesnt seem to matter which port i use for the head phones and I have tried a second identical pair and had the same result. it seems almost like its playing a rear speaker sound setup its just a bit slow and higher pitched that the orginal.
Has anyone heard of anything like this happening before?