Sound Problems on my DDJ-1000

I remember the clipping sound issue but haven't recorded a mix in a while to see if it's till there for me. 

I've just had the same problem with a Microsoft Surface Pro 7 and done some research.

The problem is in USB3 and the buggy Intel drivers that don't follow the USB3 spec: http://forumsarchive.presonus.com/posts/list/33427.page

Two alternatives that fixed this for me:

#1: In rekordbox options, Audio section: in the Audio dropdown, select 'Line (PIONEER DJ DDJ-1000)' instead of 'DDJ-1000 ASIO', then experiment with the buffer size until you hear no clicks.

#2: Download and install ASIO4ALL driver, then in the same dropdown in the options select 'ASIO4ALL' and again experiment with the buffer size.

In both cases try to set the buffer to the minimum reliably working size: the larger it is, the more the latency is, for example when scratching. In my case, somewhere around 500 samples was perfect.

My understanding is that option #2 is preferable: option #1 sends the audio via the layers of Windows APIs, while #2 talks to DDJ-1000 directly.

So somehow, the generic and open-sourced ASIO4ALL is working better with this combo than Pioneer's own ASIO driver. Go figure.

There was another advice on the web, which didn't work for me, but I'll list it for completeness. This is also the 'official' way from Pioneer:

#3: Open DDJ-1000 Setting Utility (from Windows menu or by clicking the 'Setting utility' button under 'Input channels' in that same options section and try to adjust the ASIO buffer size there. Again, didn't work for me 100%, although it did improve things slightly at the max level.

Let me know which option works for you, if any. I guess try #3 first, since it's the official one...

Having similar issues. Question: is there a way to make Asio4All work with the headphone output?

I'm entire not sure what you mean. ASIO4ALL has to do with the data exchange protocol over a USB3 connection. The headphone output is something orthogonal to that.

Sorry, meant to write headphone cue out of the DJ 1000 unit. I was curios if I could use Asio4All output > DDJ 1000 and have headphone cue.

(it was a long night of debugging :) )

Oh, yes! There is not practical difference in the functionality between the OEM drivers and ASIO4ALL: your DDJ-1000 will function the same way in every respect, including the headphone cue.

Using ASIO4ALL only increases potential problem points (incl. latency) as you're no longer going from the software to the hardware, you have to step through the ASIO4ALL software first.

There are other sources for clicking and noise, including the Intel TurboBoost function, as well as other background tasks or applications causing interference.

I'm not sure you read my post in its entirety. Using ASIO4ALL has completely fixed the clicking sounds problem for me. Could you explain that?

Speaking of software: ASIO4ALL is a driver, just as much as Pioneer's own 'DDJ-1000 ASIO' driver is. That's why and how rekordbox finds and displays it in the same 'ASIO' section of the Audio dropdown list. Whichever one you select, rekordbox will have to "step through" it when exchanging data with the device -- you just swapping one driver for the other, not adding one on top of the other. You could argue that Pioneer's proprietary drivers are better integrated with the rekordbox software, and I'll buy that. However, as the evidence shows, this better integration is worth nothing if users experience nasty problems like clicking sounds, and these problems happen to be fixed by "less integrated" generic ASIO drivers.