Ticking/popping noises from DAC

I recently borrowed a PS Audio Directstream DAC with bridge.   It sounds very good but there’s one issue: I’m hearing ticking/popping sounds over my speakers at random intervals—sometimes within a few seconds of each other, sometimes within a few minutes.  The sounds only last a fraction of a second but are very annoying—almost like the sound of a scratch on a record. I’ve tried the bridge and the usb inputs.  It’s more frequent on the bridge input but still happens on usb.  I’m pretty sure the issue is with the DAC because I never had it before and it doesn’t happen with my Aurilac Vega1 DAC.  Has anyone else experienced this?  Any suggestions?