Definatly make sure you run the master volume abour 2 oclock.
Then roll up your channel volumes to suit .
I keep the clean volume about 1 or 2 oclock.
One thing about the UL is that it(to my ears AND others will back me up on this) it just doesnt bond well with Vintage 30's. They sound shrilly/lack punch,kinda ice picky but useable.
I was all over the different tone settings trying to make it work..UNTIL,
I scored a VHT FatBottom 2x12 cab. I knew then,what others have told me, VHT cabs match up to a tee with the Ultralead. 3 days ago,I sold my Bogner 4x12 and bought a new VHT 4x12 Fatbottom. Thunder from above is all I can say with both cabs running. Also,the amp now cleans up better with rolling off the guitars volume then it did with the Bogner cab.
By no means am I ragging V30's or the Bogner cabs.Every other amp recently I have owned(XTC,SLO,Decatone, Budda SD80II) sounded stellar thru the Bogner.
SargThump and Bob Savage will both attest to VHT AMPS/VHT CABS.
There is a VHT forum too by the way.
Have fun with your new head !