[TIMITS]

I have a slight hearing loss in my left ear and would like to be able to "balance" the left and right channels coming from the amp.  Luckily the volume control is a two-part affair which allows for individual adjustment.  My difficulty is that I find it difficult / impossible to get an accurate balance listening to normal music tracks.  Is there anything that has say simple tones which alternate between left and right channels?  
 
Thanks in advance for any tips.

 

[Lumify]

A little late, but try Sinegen. I use it for all of my audio testing needs. http://www.tucows.com/preview/502787