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SM7B/CloudlifterZ/MVi Ground Issue??
Old 13th November 2018
Here for the gear

SM7B/CloudlifterZ/MVi Ground Issue??

Just hooked this rig up.


Terrible ground buzz. If I put my finger anywhere on the MVi the buzz gets quieter but still crackles a bit.

XLRs are brand new. Entire rig is brand new right out of the box. I've tried each XLR 7B/MVi and no buzz.


(I also snagged some ATH-M50x per recommendation and they seem to be too quiet did I get the wrong headphones?)
Old 13th November 2018
Lives for gear
bgood's Avatar
The headphones are fine

It sounds like the mvi is either a piece of crap or broken
Old 13th November 2018
Here for the gear

The buzz only happens when the cloudlifter is plugged in so I'm thinking that's the issue. I'm waiting on a call back from them.
Old 13th November 2018
Lives for gear
You do have the phantom power switched in?
The cloudfilter needs 48V phantom power
Is the MVi connected with USB (Phantom Power: USB: +48 VDC, iOS: +12 VDC)?
Old 13th November 2018
Here for the gear

Yes Phantom Power is ON
Old 13th November 2018
Here for the gear

If I unplug things from the mic going back the buzz stays until I unplug the couldlifter.

In other words... If I unplug the mix I still have ground buzz. Once I unplug the Cloudlifter it goes away. Bad Cloudlifter? Or is cable still possible?
Old 13th November 2018
Lives for gear
MarkF48's Avatar
- Any difference if you run the laptop on battery alone or using the laptop power supply plugged in?
- The Cloudlifter shouldn't cause a problem, but could put noise out if the phantom power isn't well filtered that powers it.
- I don't see a real 'gain' control on the MVi thingy that I looked up. The mic 'gain' appears to be controlled within software. If you change the gain in the software does the headphone level change?
Old 13th November 2018
Lives for gear
Or phantom power to low.
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