The Eventide official line is they can only advise the official Eventide Power supplies … which you can understand.
However, they will run with other power supplies, the OneSpot with an L6 converter works … you can also buy an official UK spec Eventide power Supply.
Basically a decent 9V DV Boss Style + a OneSpot L6 converter will work as long as it puts out 500mA or above … oh and don't daisy chain the power supplies … you need to keep them isolated.
interestingly the US H9 PSU is worldwide voltage and I use the 3 I bought from the US with a 3 pin to Shaving socket … when not using the Eventide PowerFactor.
Hope that helps
