That question leads me to believe you are getting ad hominem. I'm playing an 1000 seater venue on Friday, so I'll let you know how my rig copes with that.
That's not where I was going with that at all - the backline you've described that your band is using is unlike that of any working metal band I've ever seen, so I thought it was relevant if you typically play in front of good sized crowds, or are just starting out...
If it seemed like an ad hominem attack, I apologize, since that wasn't my intent... When someone posts something that directly contradicts my real world experience, it's my nature to ask questions... I don't believe I've ever seen a working metal band with as small as backline as you've described...
- georgestrings

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