Just thought I'd give everybody a heads-up on this website. They have loads of IRs from Marshall, Mesa Boogie, Fender, Ampeg and many others and they're all completely free. Here's the main website: Soundwoofer, Free Impulse responses and Impulse response library And here's their top 20 list of the most downloaded IRs: Top 20 list - Soundwoofer blog There are also some videos on the front page explaining why they're making these freely available. To find more IRs just click on the "Library" link. Have fun.