Mike. I think you answered my question. I generally listen between 80 - 90db like yourself. However I do like to crank thye volume from time to time so that is generally in the 95db plus range.
Are the the quatro's and 5a's OK with that?.
What has the warmer tonal character(easier on thye ear and bad recordings), the quatro or 5A?.
What is the difference in the bass between the quatro and 5a?.
I'll try and remember to come back and see your response.
cheers Shane