Consecutive Kernel Panic

As mentioned, you panic occurred in the Audio drivers.

      Kernel Extensions in backtrace:
         com.apple.iokit.IOAudioFamily(206.5)
            dependency: com.apple.vecLib.kext(1.2.0)
         com.apple.driver.AppleUSBAudio(312.6)
            dependency: com.apple.driver.AppleUSBHostMergeProperties(1.2)
            dependency: com.apple.iokit.IOPCIFamily(2.9)
            dependency: com.apple.iokit.IOAudioFamily(206.5)
            dependency: com.apple.iokit.IOUSBHostFamily(1.2)

You have the following kernel extensions installed, all except Dropbox seem to be involved in audio.

com.getdropbox.dropbox.kext	1.11.1
com.Cycling74.driver.Soundflower	2
com.Sonarworks.driver.Sonarworks	1.8.11
com.uaudio.driver.UAFWAudio	4.3.1 47542
com.zerodebug.AudioMuxDriver	3
com.uaudio.driver.UAD2System	9.12.1
com.RME.driver.FirefaceAudioDriver	3.39

There is a very good chance one of these kernel extensions is sticking its fingers into kernel data structures that causes the Apple audio drivers to panic your system.

It appears to be either your Audio hardware or maybe the software.