Hi!
I've just purchased Behringer Q502USB mixer to interface with Loopy (Iphone 5S) and everything seemed to work fine at first. Then the I started having problems with "hanging input" — the output playback was ok, but Loopy stoped hearing anything on the input and kept repeating small portion of incoming audio (~0.5s) which came to the input at the time of glitch.
I have to restart Loopy or reconnect the usb to have it fixed.
Can't see any pattern in that behaviour, it just happens sooner or later.
I don't know yet if it's a problem with the Behringer or Loopy since I haven't tested the mixer with other software or hardware.
Anyone experienced anything similar?
edit: I'm using powred usb hub (also using usb2midi converter) and the problem seems to disapear when I omit the hub... I guess I'll try different hub first