DAWs, Converters:
Dangerous Music (mixer, summing buss)
Digital Audio Denmark
Apogee Electronics

Monitoring:
Adam Audio
ATC

Miscellaneous:
ATR Services (tech support & products)
ReAmp (alternative signal processing)
Little Labs (instrument distro)
Z-Systems
Extreme Headphones (extreme isolation headphones)
Real Traps (acoustic treatment)
Rupert Neve Designs
Roll Music Systems
Glyph Technologies
Telenordia (German Tape Op distributor & FX boxes manufacturer)
Auralex (acoustic treatment)

Pro Audio Dealers/Repair/Media:
Mercenary Audio
Blevins Audio
GC Pro
Sweetwater
Sonic Circus
AudioMIDI.com
BSW
Encore Data Products
Reel Deal Pro Audio

Microphones:
Royer Labs
Blue
MXL
Soundelux
Pacific Pro Audio
Audio Technica
Shure
Brauner
Soundfield
Pauly Superscreens
Josephson
sE Electronics
Karma
Heil
Lauten Audio

Mic Pres, Compressors, Processing:
DW Fearn
Pendulum Audio
Great River Electronics
Universal Audio
FMR Audio
Chandler Limited
Millenia Media
PreSonus
Daking
Brent Averill
Drawmer
Hamptone
Focusrite
Grace Design
Thermionic Culture
A-Designs
Sta-Level