I recently purchased a Headrush 108 frfr as my amp out from the Pod Go. If I try playing audio from my tablet into the effects Aux/Return I am unable to hear the music volume throught the Headrush frfr. Can someone help explain if this can work with the guitar amp out. I can hear the music and guitar signal if I use my headphones . Apologies if I seem lacking in my understanding of the Pod Go. Any help would be much appreciated. Thanks.