[PSB Guy]

Audio By Van Alstine
Salk
Virtue Audio
Blue Jeans Cable
Bryston

Cornelis

[Opus Flatus]

AVA
GR Research
Virtue
Soundfield
Decware

[NIGHTFALL1970]

AVA
Magnepan
Blue Jeans Cable
Classe (old stuff)
Apogee Acoustics(No longer around)

[jjc1]

  Cary Audio
  Clearaudio
  Benz Micro
  Bryston
  Kimber Kable

[sunnydaze]

Juicy Music (outta business)
Kuzma analog gear
Clearaudio MM cartridges
Morrow Audio cables
YS Audio / Audio Experience preamps, for excellent sound at very sane prices

[Blackstone]

1. Ayre
2. Bryston
3. dCS
4. B&W
5. Transparent Audio

[lokie]

Western Electric
Klangfilm
Audio Note Kondo
Altec Lansing
Jensen

[AsTimeGoesBy]

Hi!! I am a newbie here. With limited experiences, here is my list.

AKG (Headphones: my starting point in the audio realm)
Marantz (My favorite vintage receivers (2270 & 2285))
B&W (My first pair of loud speakers)
Sabre (My wanted unaffordable DAC chip)
Amphion (My first speaker upgrade)

[GregC]

Gary Dodd
Emerald Physics
Origin Live
Modwright
Whest

[mpcrelly]

just posting companies that have made stuff I like!

Bryston amps, preamps, dacs
audio research preamps
sony headphones mdr-7506
magnepan I'd like to have one er, two of their speakers!
dyaudio speakers and subs, even the lower models...ok, thats mostly where I have experience.. 

[WireNut]

   Audio Research
   Sonic Frontiers
   Raal
   Scan Speak
   Seas
   Swan
   Focal
   Audio Technology

[Mr. Orange]

Magnepan
Threshold, SS
Cary Audio Design, Tubes
Wadia
Cardas
Sansui, Vintage

[Guy 13]

Hi all Audio Circle members.

GR Research
Decware
Sennheiser
? ? ?
? ? ?

Guy 13

[wisnon]

Lampizator
iFi Audio
Heil AMT
Rowen
NAD
Dspeaker
Gradient
Lumen White
Signal cable
Pass Labs
AMR
Chord
Emerald Physics

[decal]

Rogue Audio
Marantz
Pro-Ject
PS Audio
Tyler Acoustics

Why? Because that's what I own at this time. My list might change tomorrow, who knows!!!!

Add LSA (Living Sounds Audio) See, I told ya' !!!!! 

[hibuckhobby]

Audio Research
Woo Audio
Usher Audio
Focal
Marantz Reference

[Elizabeth]

Audio Research

ARC is way above the rest for me.. If I could afford all top ARC stuff it is what i would own.

[sounddog]

Salk Sound
Bryston
Kimber Kable
Acoustic Zen
Magnepan (my 1st real speakers)