0 or nothing. Jokes, listen loud but protect those ears, once they’re done they’re done.
One thing I've found, especially with lower distortion systems is that you tend to listen louder without even realising it. 100db with a fair amount of distotion sounds awful but 100db at low distortion is bearable. However 100db is still 100db and the damage is already being done. There are guidelines to follow for healthy ears in terms of exposure times. THX reference level is pretty much safe a few times a week!great advice. I have a young daughter and when she cries sometimes she’s hitting 90db, nothing like the listening levels of the HT. she’ll cause me ear damage before it does I think