IR
Voxengo Deconvolver
RedWirez
Marshall 1960A cabinet.
GuitarAmpModeling.com
Huge amounts of guitar cabs, and general talk about IR use.
Kalthallen Cabs Free
Guitar cabinets.
Signalaudio's God Cab 1.4
Mesa guitar cabinet.
AirWindows
Huge spaces sampled here.
EchoThief
Lots of unique spaces.
Intelligent Machinery Productions
Experimental and artifical and unnatural spaces.
OpenAIR
Real acoustic spaces, interesting buildings and other sources.
Balance Mastering
Try your mix through the Funktion One sound system at The Hive Project night club.
A very cool and unique space here, how about an old German NSA listening tower?
Voxengo
Various spaces.
Diego Stocco
Free/donation for this bonus pack, good for rhythmical material.
Samplicity
Two free halls.
Lexicon 480L
Classic reverb.
Fokke van Saane's Impulse Responses
Lots of classic reverbs, springs and speakers, and also: his own mouth (!).
Pipelineaudio
Eventide DSP4000 and TC Electronics M5000.
zidee
Lexicon PCM90.
Samplicity
Bricasti M7, classic reverb unit.
Signal To Noise
Lots of classic reverb units
Free Impulse Response Downloads
After downloading a few IR packs here and there, I came across the 7deadlysins Impulse Pack over at Osiris Guitar.com that contains thousands of impulses, with many of the best and most popular IR’s included all in one place.
Some of the better ones to start with include the Guitar Hacks Impulses, the Engl Pro 4×12 V30 pack, the Mesa Boogie 4×12 700+ Gods Cab IR’s (or you can download it separately below), and there are a bunch for specific bands and songs.
Free Redwirez IR Library – Redwirez offers a free pack of Marshall 1960A IRs, with Celestion G12M-25s, and it includes 17 different mics to choose from, each in dozens of variations. OwnHammer – An impulse response library based on “V3 Mix” sampling methodology with neutral tube power amps. Catharsis Impulses – The 7deadlysins pack contains thousands of IR’s, but somehow Catharsis isn’t among them. God’s Cab 1.4 – This is included in the 7deadlysins pack but it is an older version. This includes over 700 Mesa OS IRs and Axe-FX ready files at 44.1, 48, and 96 khz sample rates. IR