Noise with USB

[pprator]

Using Pro tools M-box/LE 7.3, Yamaha Motif ES8. When the PT application loads, a persistent "whine" is noted through all outputs, including headphones. If USB cable to Yamaha is unplugged, whine disappears. Have tried changing USB, other cables that connect to Mbox. Any ideas?

[Shame69]

Same problem with Motif6,you need to buy this :
ART CleanBOX II 2-Channel Hum Killer

http://www.frontendaudio.com/ART_Cle...ler_p/7594.htm

[pprator]

Thanks. Will give it a try.

[mortensen]

wow - same problem with mbox2 and m-audio conectiv!

... any clues to why noise is produced by two USB interfaces? and is that box the only solution?... I live in denmark - not shure, anyone has it

[bb_aus]

its likley just a grounding issue. you can try liftingthe earth of your signal cables