Depending on which Iyama monitor is being used, it is possible to conect an Amiga to an Iyama. Some of the older models do sync to 15khz. Many people who owned the GVP 110/24 Graphics board purchased Iyama monitors, since you could display 1280 by 1280 resolution, as well as any others down to 320 by 240. They even included composite inputs so one could do video work and switch back and forth. Sadly, they took these features out of the later models, since this apparently was not a large market for them.