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tdehan

Behringer U-Phoria UMC4040HD use with Cakewalk

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I am using the Behringer U-Phoria UMC4040HD Digital Audio Interface with Bandlab Cakewalk.  The Behringer U-Phoria UMC4040HD comes with a power supply however, everything with the Behringer U-Phoria UMC4040HD seems to work just fine only with the power it receives from the USB connection to my computer without the power supply plugged in.  Is there a benefit I am missing by not using the power supply for my audio digital interface?

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USB connects are generally limited to a max of 500ma @ 5v - so using the power supply ensures full voltage and current to the electronics - pre-amps, converters, phantom power, etc can take more power than a USB connection provides (unless using the full-on PC USB 3 connectors... which requires the USB on your I/O to use it) and as a result, you may encounter additional audio distortion and perhaps jitter in the converters. may be subtle, may not be. on the larger units (i have the 1820) i definitely only run it on the power supply.

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