casey:

If you can hear out to 15Khz then you are doing really well.

My listening today is limited to peaks of 85 to 90 Db. I find that over that is just too loud. In my 2 X M2s / 2 X EP400s audio only system, my 35W/CH Tube Amp easily pushes out these levels in a fairly large room.

I took one of those online 'hearing tests' & at 65 years old, I peak out at 12-13 Khz, that I understand is still good for my age.

If you take one of these tests, be sure to use speakers or head phones that are capable of reproducing the higher frequencies or you might be disappointed, ha! Initially I used an el-cheapo Sony portable mini-radio headset & couldn't hear anything over about 8-9 Khz. My big, high end Sony headphones enabled me to easily hear 12 Khz...

TAM