What decibel level do you listen at? What is ideal?

I would be very curious to hear an A/B demo of a variety of speakers only playing at lower volumes, say 70 db, with both high quality , high power solid state amps vs high quality, low powered tube amps. I would not be surprised if the for the first few watts ( maybe that many on peaks at that low volume) , the tube amps sound better, fuller, richer & more 3 dimensional. 

@jonwolfpell

That’s the best way to learn. Find yourself a friendly dealer. Over the last forty years I have always been friends with at least one dealer. I might propose a question like this and he would know the answer and set up a demo for me, or if he didn't know, then say, "well, let's find out". The dealers I have been friends with have been enthusiasts first and business owners second. 

I would recommend using a one set of good quality speakers that you are familiar with... if you swap amps and speakers you get too many permutations really fast. You could easily use Pass X150.8 and X350.8, for instance. 

For jamming rock mid 80s to mid 90 peaks ,

easy listening in the mid 70s , late night maybe high 60s 

Between 80 and 90 dB C-weighted on Decibel X iPhone app. Can't feel the bass much below that.

This app monitors the session and gives an estimate of how long before ear damage occurs. Keeping it below 90 dB pretty much allows you to listen for hours.

80db+ is typical for me at my listening position which is 12ft from my stacked large Advents.