USNRET Posted April 7, 2014 Share Posted April 7, 2014 (edited) Sounds like it should work, as long as the wall wart is 12v DC. So when the C28 is on the 12 volts turns on and the speaker selector switch switches to the Mac. BTW just curious isn't the C28 a preamp? I used thsame set up on my C-28. Just look for a wall wart that has the amperage. BTW, I now use a spare Wii power supply on all mine since it has all the power I need and the leads are long. Here's the start of one build that control the AC-3 and SPK-1. I also have 12 vdc PC cooling fans that ran off of it to cool the amp tubes when they were in the rack. The Global Cache contact closures are controlled by my iPad. Edited April 7, 2014 by USNRET 1 Quote Link to comment Share on other sites More sharing options...
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