I’m using a Donner DP2 from Amazon - cheap as chips and will power the DHA as well as all my other pedals. Obviously I’m using the voltage inverter, but it’s fine and noise free - the only issue is that the brick won’t power up with the DHA attached; it doesn’t like seeing a huge current drain on startup, so I just wait until all of the lights come on, then plug the DHA in and it’s fine.