There are a few out there besides the iFi Gemini...
Doukmall on Ebay
Audiocadabra
Pangea
all make a dual headed USB cable that allows separation of power from signal carrying wires.
There are other brands too.
Worth it? Only if YOU can hear a benefit that justifies the cost. Buy from Music Direct (iFi) or Audio Advisor (Pangea) and you can return if there’s no improvement. From a technical point of view (and I’m no EE) it does seem like a good approach.
Doukmall on Ebay
Audiocadabra
Pangea
all make a dual headed USB cable that allows separation of power from signal carrying wires.
There are other brands too.
Worth it? Only if YOU can hear a benefit that justifies the cost. Buy from Music Direct (iFi) or Audio Advisor (Pangea) and you can return if there’s no improvement. From a technical point of view (and I’m no EE) it does seem like a good approach.