vSigX should be configured to connect to your Eventide Ultra-Harmonizer using a USB Serial Adapter and a standard 9 pin serial communications cable. Connecting via Midi is not supported yet; see the bit above concerning cash
It doesn't seem to mention firewir
Also do i need a key span adaptor or can i just buy any Serial to USB?
The reason I ask is that i recently bought PI express card for my mac pro and the firewire doesn't work with it.