Free Online Hearing Tests
I wanted to test my hearing. I looked for online testing sites.
I found three good ones.
http://hearingtest.online
//www.garynorth.com/snip/1177.htm
//www.garynorth.com/snip/1178.htm
I used a pair of high quality headphones: Denon.
Also, these tests have you set volume on-screen, not with your pre-amp. Each site's software controls for volume to achieve greater consistency.