Alright, here we go.
So far these people have (more or less.. Hon-Cheung?) confirmed:
Jelle Schrijver (+1)
iPods
iQube
Tension Lab EAP03 portable earprocessor
Velleman HPE1
JAYS (Q & J)
SHURE E3 (pro)
V-Moda Vibe Duo
iGrado
MC2000
Macbook Pro and Apogee Duet
HD600 with Cardas cable
Ultrasone 780
UE Tiple Fi 10s
Senn HD25
Ipod classic with qables LOD
Iqube amp
Paaj
ipod touch
macbook/duet - BJC kabel
gs solo/psu1
hd650
sr325i
k271s - headphile kabel
es7
esw10
Contrastique
Ipod 160gb
Larocco PRII MKII AD744 Mod
Ultrasone Proline 750
Powerbook G4
Apogee Duet
Ultrasone Edition 9 #338
Chimpie
NjoeTjoeb Reference
Macbook Pro
Allesandro MS-Pro
HD650 with Equinox
HD25 with Silver Dragon
VDM
Thrillmetoo
HP notebook
Novation Nio (used as amp with DAC)
Zen Vision M
AT W1000
Senn PX100
Senn PX200
ZarakiSan
Cowon D2
Microsoft Zune 80 (Red)
Asus EEE1000
Nintendo DS
Sony PSP
Beyerdynamic DT880 (2005, 250 Ohm)
Ue-11 (Okay, those are private and not for sale)
Etymotic ER-6i
Fiio E3
Fiio E5
iBasso D2 Viper
digitalfrog
I will have the system in my sig, though I might just go and pickup a K340 on saturday.
Indra, did I get your gear list down right? Glad to hear you're still coming!
I'm reading through the pages I missed now so people/gear may be added.