Is the anything to loose from using an very small isolated power supply like this one: Gator GTR-PWR-5 https://www.sweetwater.com/store/detail/GTRPWR5–gator-gtr-pwr-5-pedal-board-power-supply
This power supply will not work because it does not provide enough current, even if you combine all the outputs. At 9V the H90 requires 800 mA. At 12V it requires 600 mA. We recommend something like this: https://store.eventideaudio.com/collections/accessories/products/powermini
One outlet will be sufficient for the H90 running it at 12V.
Also – what is the exact connector size for the DC 9-12 input ? I noticed that some do not fit
The barrel cable needs to have a 2.5 mm connector and it needs to have a center-positive polarity.
