If 'Denon Dj ASIO for Dj Controllers' drivers are NOT installed on your system then the queries will fail! For instance on VirtualDj you won't see the volume sliders position of the device get reflected on the skin. Please take a deep breath and read these topics: I will try to summarize all the info here: 1) When you start VirtualDj (or Serato Intro) the software needs to query the device for some stuff by using some sysex codes. Most likely you can have a generic printer driver to print on your printer, but if you really want to take advantage of all of your printer potentials you need to install/use the proper driver. They cannot work properly with any other device. Finally, real ASIO drivers can only work with the devices they know how to handle. That's why lower latency can be achieved, and that's why Windows cannot see/use your device while it operates in ASIO mode. This means that it adds one more layer on the communication path between the software and the device! By contrast, real ASIO drivers talk 'directly' to the devices they support by bypassing most of the OS communication layers. The way ASIO4ALL works is simple: It provides an 'ASIO driver' endpoint to the application so that it can trick it that it's talking to a device with ASIO drivers and then 'ASIO4ALL' talks to the WDM/WASAPI drivers of the device.

ASIO4ALL was born in order for these users to be able to use their consumer grade sound interfaces with such applications that didn't support WDM drivers. Instead they had access to consumer grade soundcards (like Sound Blaster) that used to use 'WDM' drivers. Average users did not have access to sound interfaces with ASIO drivers. A decade ago (give or take a few years), there were some audio applications (mainly DAW's) that they would require only ASIO drivers in order to work.

They derived from the need to use 'consumer' sound interfaces with 'PRO' software. Technical stuff: ASIO drivers like 'ASIO4ALL' for instance, are not real ASIO drivers. So, If you don't like the official ASIO drivers I believe you would have better results by just using WASAPI straight away. I don't know how 'Generic' / 'Other' ASIO drivers will work with the unit, but generally speaking these drivers are just an intermediate translator layer between the WASAPI drivers and the software. Deleting the Line-Ins WILL cause erratic behavior of the controller, at least with it's official ASIO drivers which are 'Denon Dj ASIO for Dj Controller' That's due to a bug on the firmware of the device. Also for the MC6000mk2, make sure that Master/Headphones are the only 2 options selected for the sound configuration for Virtual DJ 8.

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