Help! A speedy changeover at a festival yesterday, connected my HD500 using 4 cable method - plugged in, turned on... Nothing....! Ended up gigging straight into the amp. Got home and tested all leads, amp effects loop etc - they're all fine. Then tried HD500 with headphones - strong signal coming through...! So the HD appears to be working - all leads are ok - amp loop is still a poss weak link but it's a Dual Rec, built like a tank, never had dramas with it...
Any ideas??