Yamaha T-85- 2 sets of outputs?

I've got a Yamaha T-85 tuner that has two sets of outputs. One labelled "High level" and the other labelled normal. Anyone know the difference? And if anyones got a manual they could photocopy for me, I'd be grateful.
Try to see if they are juts differnt gain settings.Kepp the volume of the amp the same and switch between the outputs.

You can downloat the owners manual here if you have the Acrobat Reader installed.
Good Luck with your fantastic tuner.