[Shizelbs]

The 2 Channel Setup
The HT Setup
The 360 Headphone Setup

 

[enzoferrari650]

4

surround stereo system in room.
2ch stereo system in living room
portable headphone system
stereo system in my car (counts cause I've spent the most money on this one)

 

[jagorev]

Two: Portable and bedroom. I suppose I should count the computer as another system, but I don't really do any listening there.

 

[KJ_Palmer]

Two audio separates systems, not to mention the PC setup.
One minidisc based, the other CD-R based. Sometimes I even hook them up together...

 

[mikeliao]

1. HE60 system
2. K1000 system
3. HD650 system
4. SR325 system
5. Office system (HD595)
6. Portable system (Ety4s)
7. Gym "system" (E2c)
8. HT and other speaker rigs

Ouch. Now that I think of it, maybe I should get rid of a few.