David Sykes;152381 wrote:
I've had an identical problem with two UMC404HD's and I am pretty sure it's an issue with the interface rather than my system. I'm running Logic Pro X and all 4 input channels from the UMC work fine. The problem I'm having is that the speaker outputs work for about 15-20 seconds then crackle and disappear completely. Exactly the same thing happens if I use headphones. I can work around it by switching the output to my Mackie mixer desk and then the speakers and headphones work perfectly. It's very weird that I've had this problem with both UMC's so I'm wondering if anyone else has had the same issue and if they were able to sort it out? My first unit was returned to the dealer for a full refund as they were out of stock and my second unit is just about to be exchanged by the dealer but I'm obviously concerned that the same thing might happen again. Any help would be appreciated. Thanks.