On the clean stacks, at low volumes you really gotta crank the drive to get a nice light sensible gain

You will hit unity gain (output level equal for "on" vs. "bypass") with the volume knob at about 10:30.

I use it in the chain that goes straight into my JCM900 (not the fx loop) and i use it to do two things - A) to provide a third-option drive tone (set amp's channel A to v almost clean and kick this in for a moderate amount of transparent overdrive) and B) to beef up the Channel B lead high-gain tone, which it does subtly but brilliantly

Highly recommended, low to medium gain overdrive

It gives an amazing clean boost, and can get a little dirty gain on a clean setting amplifier that sounds amazing

A clean boost, as well as a lower gain Fuzz

And thanks to the unique range in available gain, you can boost your signal in ways that range from almost completely clean to bright and raunchy.

Great low gain drive

The transparent gain adjustment is a nice feature (it really is transparent to my ears)

In that setup I can dial in more gain without getting harsh overtones and with a little clean volume boost as

I have tested both the buffered and unbuffered signal options (as well as on other pedals) and I can not tell a huge difference between the two, though this is almost certainly due to my personal rig rather than any benefit or flaw of the pedal.