A question on amp matching

I always find it frustrating when someone posts a question, receives multiple replies, then fails to respond to any of them.  That seems disrespectful to those who took time to try and help out.

So thanks for the replies.  The general answer seems to be gain is useful to know but not nearly as important as power rating.  Of course other design elements can be important as well, so it is not one thing.

And again, I was looking for general advice, not asking about specifics for one model.  Anyway, a big part of the disappointing audition was a hook up mistake, nothing to do with characteristics of the amp involved.

Thanks for replying @hertzhead.  I knew about doubling power for a 3 dB increase in loudness, and the 10x increase in power to double output level, but lacked a clear understanding of listed gain.  So this was very helpful.