This is an Ableton pack containing 6 presets for the "drum rack" instrument. It was made with Ableton 10 and won't work with a lower version or another DAW. You can still download the original samples and use them any way you like, though.
Content
The presets simulate the following drum machines from the famous "TR-serie" by Roland :
Just open the pack with Ableton to get access to the presets. You can then save them in your user library.
How it works-Some presets (TR-505 and TR-707) are just drum racks containing samples of the drum-machine, pretty straightforward.
-Others presets (TR-808 and TR-909) work with many samples per pad, depending on the knobs used for each individual voice. This is a way to emulate the workflow on the real drum-machine, with analogical voices that can be adjusted by turning knobs and offering a wider range of sounds.
-The TR-606 and CR-78 voices normally can't by modulated, but samples used might still vary depending on the velocity (velocity above 100 will trigger a slightly different and stronger sample). The TR-606 preset even has a "volume distortion" knob that simulate the drum-machine saturating when you push the volume all the way up.
Maybe that's a bit overkill.