I'm curious. What is your "normal" listening volume?

Ugh! The last sentence above should read:  When testing or changing any gear or room acoustics....

Calm levels (30%): 65-75dB peaks

Regular (60%): 83-90dB peaks

Stadium Levels (10%): 95-110dB peaks

For many, people will either listen louder or softer because their systems render tonality differently at different volumes (e.g. a tube preamp's volume will can determine the amount of "tubey-ness" and often sounds better starting at 11 o'clock"). But for really great systems, tonality, coherence, and realism are retained regardless of the system.

@ ditusa, thanks!  Cool app. 
 

70-82 db. My apt is noisy, so less than that is little more than background.  The ambient noise level affects how loud your music needs to be played, as well as its dynamic range.  

Sorry @sargonicuse, thanks for the link!

I prefer listening into the 90 dB’s, sustained e.g. for loud rock music. I’m not a reserved audiophile listener lol. I take breaks, avoid listening fatigue and don’t do this daily. If gear has an aggressive / rough top end, it won’t last long here.