It will work with any normal monitor.
Specifically it will work with any monitor that accepts a 31.5 Khz signal.
The vertical refresh of Amber, as detected by my ViewSonic monitors is 49.9Hz. Some TFTs will not sync this low. I run PAL exclusively.
Naturally if you are an NTSC user, then there's no problem, as it is closer to 60Hz.. Why would you want to run NTSC though, you lose valuable screen estate. ;-)