Zooming in on the waveform, there does appear to be a 'bump' every 5ms or so, which would be kind of a small buffer, even for internal transport, but entirely possible. (USB devices may or may not count as different machines, depending on how each of them works - the USB spec provides a way to synchronize the clock, but it's more complicated than just shoving a bunch of samples into a buffer and sending it up the wire, which is also a USB-acceptable way to do it) More accurately, match the clocks, as different gear with the same setting can still drift out of sync with each other, but if you're doing it all on the same machine, you're probably okay there. Of course, the correct way to fix it regardless, is to match the sample rates all the way through the system. Resampling done right is completely transparent.

If that's the case, then I'm surprised that the 'glue' cable doesn't resample.

But for live audio, it speeds up each buffer individually and puts silence in between. If you were playing a recording, that would appear as ~8% fast, with a corresponding pitch shift. Like the destination expects 48kHz but the source is 44.1kHz, and it just blindly plays out each small buffer as it becomes available. My second thought is a mismatched sample rate, without resampling. I believe the problem is with how VDJ is routing the I/O on the rev7, which is more complex than my Rane one.My first thought on that is a noise reducer that isn't set right. I don't think OBS is at fault because it's just listening to whatever input I tell it to listen to. then I would totally be looking at Pioneer. If when running it through Serato, I experience the same thing. That tells me that VDJ is routing something different, leaving those other things out of the 'master' mix. Instead, it leaves out FX, mic, sampler, etc.

For instance, routing 'master' out to whatever I choose, should actually do that. but the following facts counter that idea: - everything works fine with my RANE ONE (VDJ & OBS) - Everything works fine when I run the rev7 with Serato (select Serato Virtual Audio in OBS) - OBS never had the option to select specific USB channels with any of my previous controllers There's something with the way VDJ routes the I/O with my rev7 that's preventing it from working 100%. I actually thought it was a pioneer issue.

Virtual audio cable for obs