I just purchased an "almost new" (the original owner purchased this unit in August, 2012) Little Dot Mk. III this past week. I am listening to Sennheiser HD598's (50 ohms impedance) through this amp.

I have a copy of the reference guide, but what I am looking for is a set of close-up pictures and/or diagrams of the underside of the Little Dot Mk.III that shows exactly where the switches are and what positions relate to which settings, so I can understand the gain adjustments better. As much as I hate to admit it, I have no idea of what I'm looking at!
A YouTube video would be ideal!
Thanks!
SN