This article is from the rec.audio.* FAQ, by with numerous contributions by Bob Neidorff others.
What do you want to know? Seriously, the best questions are
those which the sales person can answer without distorting the
truth. Don't ask a sales person to compare their brand to a
brand they don't sell. Don't ask "how good is the ...". Ask
questions of fact.
Here are some questions you may want to ask:
If I don't like it can I return it for a full refund?
Can I try this out at my home in exchange for a deposit?
What does the warranty cover? For how long?
What do I need to know to set this up for best sound?
Do I get a manufacturer's warranty with this?
Where do I take this to get it repaired under warranty?
Where do I take this to get it repaired out of warranty?
 
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