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Mine is also on an AO cable... gave me a problem just once, and has been fine ever since. This would be about 50-75 gigs of use since the one problem gig. Still... it made me nervous to order it and I don't think I'd get it again. The only time it's really useful is when the soundguy puts you into a DI before your amp so you have no way of muting your signal to the PA.