OK, I’ve understood - I think some of the confusion is what Tiptop have called things, and what we all call things here (which has varied in the thread).
So:
- the Zeus Studio Bus is a board with both a ‘bus’ of headers and a set of power regulators. You put 15V into it, it spits out bipolar 12 and 5V
- as a result, the 15V “inlet” can be sent to multiple “Zeus Studio Buses”, because each one of them is acting as a bipolar 12V supply. As long as there’s enough current from the 15V power brick (eg like the 6A 15V brick I have), each bus can guzzle that 15V into its own regulators and send out the bipolar.
So: yes, it sounds like all you’d need to do is buy another Zeus Studio Bus and connect up the inlet, as per the instructions in the manual.
The confusion was: in the case of a passive bus board, that would do nothing. The ZSB is active - it’s effectively a second +/-12V power supply (avoiding confusion with the 15V power supply brick/adapter), and so is doing what I said it would. But my language was confusing, because I didn’t know your product specifically.