Unless you truly have golden ears, most people have a hard time knowing exactly where to set each control. Luckily there are several computer-based tools available to help.
Can I use the XLR and 1/4" and Euro outputs at the same time?
Yes. Both sets of output connections may be used simultaneously. However only one input may be used at a time. If you combine a unbalanced 1/4" with a balanced XLR you could create a ground loop problem. See "Sound System Interconnection" below.
If the above options don't answer your question, or it's urgent...
Phone 425-355-6000, 8:30 AM to 5 PM PST, Monday through Friday.
If it's less urgent, you can email the factory.
For local service within the USA, find a service center.