this thread is getting long, and it is difficult to find things.
at the risk of re-asking something, has anyone gotten a hum when you use the Doubler's phantom power for certain mics requiring a preamp? i never had any issue with the AI Focus or Clarus on this, but with the Doubler i cannot run, for example, the AMT SB25 on phantom power.
The only Doubler I tried had this exact same thing going on when paired with my AMT. It was enough to keep me from buying it as I loved everything else about it.
