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Hi - I just ran into this, helping a friend who just bought a new Intel-based laptop with a Thunderbolt 3 port, and a brand-spanking new Presonus Quantum 2626 Thunderbolt 3 audio interface (BEAUTIFUL, and a beast). Anyways, he reported to me hearing pretty evident pops and crackles for anything running through the Quantum 2626 headphones, so after trying a few obvious things, effects, latency, ASIO Buffer Size, etc., I had him run both the laptop and the interface up to me, so I could take a better look into things, and work through Sweetwater tech support, on his behalf, if needed. SO - after confirming the rather horrendous pops and crackles for myself, I did some digging, and found a promising article on the Presonus web site, which is at the following link: Presonus article on Quantum series interface pops and crackles Sure enough, when I followed the steps in the above article, downloading the little freeware utility program, and disabling a couple C-State Idle settings, and applying the changes, the pops and crackles instantly went away, so I consider the issue resolved and that should be that. I just thought I would post the issue and its solution here, in case anybody else had purchased one of the Presonus Quantum series Thunderbolt interfaces. (the new 2626 is brand new and really just starting to ship, as of 2 weeks ago). The article was from 2019, so may apply to earlier Quantum series audio interface models. Hope this helps someone else, too Bob Bone