Am Sonntag 14 November 2004 23:55 schrieb Christoph Eckert: > > > ?- It has 2 Mic-Ins with XLR and Phantompower all feed from > > the USB-bus, no extra powersupply. > > Isn't phantom power 48Volts? > > I wonder that the device can get 48V from the USB bus. One > device is allowed to get a maximum of 500mAmpere from the > bus. > > USB is 5V. This means, the card has to convert 5V to 48V and > would certainly need more than 5V/500mAmp. Maybe the phantom > power is only available in conjunction with an external power > supply? Don't know, but a step up converter wouldn't need much power, if the 48V would only feed some ?A. I guess a phantom powered mic sucks less than 1mA, no? Somebody knowing please tell us;-) Karsten
