Hi,
I’m having problems when connecting the LP to my pc via USB. The noisefloor increases drastically and when I remove the cable it’s gone, any tips ?
cheers,
Also another quickie question, my PC doesn’t recognize my LP as a new hardware device. Is that normal or … ?
cheers,
The noise could be from a ground loop.
Try plugging the power cables from both your computer and the Moog into the same outlet/power strip (if they aren’t already).
I’ve read that can minimize or eliminate ground loop noise, though it has never worked for me. Beyond that, I’d email Moog support for ideas.
thanx I’ll give that a try !
unfortunately not working 
also tried several different usb cables , but noise remains the same, it is not a low hum which is the most common artefact of a ground loop but more white noise with a high pitched tone in it.
any other tips ?
I’d ask Moog directly:
http://www.moogmusic.com/contact/
My Stage II has the same issue. Thankfully I don’t use USB often if at all. I’ve never tracked it down unfortunately or if I did I don’t remember.
Is there any difference between USB and midi ? If so what are the benefits of using usb over midi and vice versa ?
Most computers have USB ports but not MIDI ports so it lets you get MIDI functionality with a single cable and without a MIDI adapter.
The LP goes one step further allowing you to merge MIDI via USB to the standard MIDI cables in and out to give you even more flexibility.
Speed might be an advantage but I’ve never really seen that in my case. I think simplicity and joining the USB revolution is probably the biggest advantage.
Reminds me of some DC issue I had with two cp-251s sharing power… you’d get a ground hum and a high pitched whine. hmmm… 
yeah, i think it’s a ground loop… Try unplugging the laptop and running on batteries to see if that stops it. Eliminated it for me.
as far as i can glean from other posts on topics like this, the LP is somewhat picky about it’s electrical source… maybe related to it’s analog signal path?