Tue Mar 15 20:29:01 EDT 2011

Phantom power

I need a DI box and I'd like to feed it from the mixer's phantom power
as I don't want to mess around with batteries that go dead or power
supplies that can introduce more ground loops.

Something like this[1].

Hmm.. Shopping around I find a cheap transformer-based passive one[3].

EDIT: actually, it's only a couple of milliamps.  Closed circuit 14mA
if the spec is followed.

[1] http://www.amazon.com/Rolls-ADB2-Phantom-Direct-Box/dp/B00102VVZA
[2] http://en.wikipedia.org/wiki/Phantom_power
[3] http://pro-audio.musiciansfriend.com/product/Live-Wire-Solutions-SPDI-Passive-Direct-Box-with-Attenuation-Pad?sku=150449