DAC's occasionally emit scary sounding, crackly static. Turn off the power amps, toggle the input switch on the DAC, turn the DAC off and on, restart the power amps.
If you've got a tube preamp...listen as you whap the preamp with the palm of your hand. This sometimes works with tubed guitar amps but it's not usually a permanent fix :-)
If you've got a tube preamp...listen as you whap the preamp with the palm of your hand. This sometimes works with tubed guitar amps but it's not usually a permanent fix :-)