Found at k-v-r:

This is the TR-505 DeComposer.
What you have are 29 24bit/44,100 Samples of this beast. Every pad has been captured with pristine TC-Electronic A/D converters. It's knobs&toggles have been tweaked to generate some of my favorite sounds. I have also included "Noize" samples of the amp output abuse mod. All samples are unaltered. This is the DeComposer as is. Enjoy this circuit bent disaster.

http://www.rhythminmind.net/tr-505/tr-505.html