My local retailer ended up sending the unit back for repair and all seems good so far, but yeah definitely know what you mean. Especially it sounds like such a great unit before it failed for no apparent reason.
Need some help here.
I was listening with the A30 Pro out of my D90. A few minutes in the music all of a sudden got cut out and the protection relay began clicking none stop. I turned off the A30 Pro and waited about 20 minutes or so with nothing plugged in to see if it'll return to normal...
This is the bluetooth version and essentially just open box as it has less than a hour of use.
Price:$old (Friends and Family, otherwise plese add 2.9%) shipped within US. You can also find my feedback on HeadFi :)