Can I use 4 output on stage?

[fg65082001]

Hey guys

I have a question that confused me for a long time
I don't have any stereo effect in my chain, all effect is mono.
.

So, I am using direct out mode XLR L out to PA Mixer
And XLR R to a IEM system for myself and other members to listen

 

to ensure my best guitar sound.

 

and I also want to use my 1/4 out L to plug in the Amp/Cab Return as a ampflier (NOT for F.O.H.)

Because I want to give the front part of audience just listen only Drums (if we don't use Amp/Cab anymore)

But i heard that there is a problem that it will cause the gear break becuz of the "Ground" will be the same between 1/4 and XLR output

and it will make "Electricity backfeeding" damage the console and POD HD!

 

REALLY?
Can I use 3 output or even 4 output at the same time?

Can Someone help me to solve my confusion, and tell me if there's other problem not include?
Thx a lot!

[pianoguyy]

Yes. You can use 4 outputs. 

But your left is left and your right is right. Some people want 4 separate outputs, which is not possible. You have 2 lefts and 2 rights. 

 

 

>>>or a left, a right, and a mono.

[pianoguyy]

As far as the ground issues ---- 

the unit, itself, is not a problem. But, in full disclosure, albeit a rarity, the issue is the problem with electrical gear all across the globe.

[pfsmith0]

The unit is not grounded thru the power supply connector (yes, there are only 2 contacts there). It is grounded thru the input/output analog (1/4", XLR) and digital (USB, SPDIF) signal connectors. I don't think you'l blow anything up unless your venue has faulty wiring between the PA mixer, IEM system, and FOH amp. The grounds for those 3 systems should be referenced to the same point (usually the fuse box in the US).