DM307’s samples are derived from modular synth drums, live percussion and classic analogue drum machines. In total, the library contains 7.5GB of uncompressed samples (although this only uses 4.8GB of hard-drive space with NI’s lossless compression) with more than 3600 samples spread across 1500 plus presets. The library is a download-only product and will work quite happily with the free version of Kontakt Player or, as I used for the review, the full version of Kontakt 5. Installation and authentication follows standard practice for Kontakt and I had no problems with any of these steps.