Maybe this will help, this is what i've found on my amp-Using Recto-2x12:
As far as channel 2 goes you have Edge(supposed to be like a Vox) Crunch(Marshall) and Mark 1 setting. I could never get the Edge or the Mark 1 to sound that good. But last night I was going to sit down and see what I could do to make it useable. I took all of the channel EQ out all the way down to 0, I was only using my Gain, Volume, and Presence Control, I took the sliders out and was only using the preset sign wave control, at this point my controls were as follows:
Gain=1:30, Volume=12’oclock, Presents=2:00, Trebel=0, Mid=0, Bass=0, Preset Eq=2:30, Master Volume=10:30
My channel 2 now sounds exactly like a vox! Not a totally cranked vox but one that is being pushed very nicely. So I was wondering what my crunch channel sounds like in this setting since I use that one the most, so when I flipped the switch down, there was nothing, barely a hint of me playing…I thought to myself this is weird, so when I went to adjust the tone controls on the channel itself that is when the volume kicked back in and the channel was working.
So what did I find out? That the reason that my Crunch channel sounds so good and my Edge and Mark 1 sounds so bad is that the signal path used for those 2 doesn’t require you to use the Tone controls on the channel for these two voices. If you add EQ to the channel it makes them sound overly mushy and overall bad. Maybe this is a design flaw or maybe it is genius. Either way it’s pretty cool to know how to EQ the channel now so I can actually use those settings.