What is the proper loudness for listening?

I have an Anthem STR Integrated amp and an Anthem STR power amp two speaker sets.  The Preamp preset volume by the factory is -35 on the "Volume knob".   Most often that setting is almost always good unless I am really jamming.   I do not have a Db meter.  The power and the ohm load and the speaker cone area give a good amount of presence. The SNR is very clean, likely class A.  I often listen to UHD or HD source or very good LP quality such as Miles Davis.   I tend to avoid low fidelity recordings, (most recordings).  Compression and noisy LP's have come to bother me so much that I limit my listening to such at below normal sound levels, if at all.  My 4 ohm Legacy 20/20 Focus speakers will put out the sound,but need 3 or 4 hundred watts.  My turntable must have higher end cart & stylus or the sound must be low volume.  Trash in, = trash out, the decibel level is not really the issue with me.

’Round here, depends where you are in it....at my desk, 70~75 is topping out a small ss amp, and loud enough in an 8h x 8d x 20w, doomed to the center cross-wise, ultra nearfield....50~60 good ’nuff.

Approaching a major physical space reconfig, so the main is down for a count....🙁

Major upheavals with good intents pending, but hope an improvement will fit into the mix.

Annd, there’s always the phones... ;)

I've noticed an unexpected but delightful increase in 'perceived dB' within a simple 4ch 'surround' with the Walsh.....something to improve on in the next 'condition'. *S*

Whatever you are comfortable with but be careful not to overdo 

Bravo barts, I agree. My system sounds best at 90-100db and does it easily at about 25 watts a channel. The key is very dynamic and bass heavy music. To each his own, but what I have come to expect from music is a connection that can only be had at higher volumes 80-100 dbs. As you said, the music and your ears will tell you what is enough.

80-85 db is as loud as I go and I'm happy to listen at way lower levels than that at night when the ambient noise level is lower.