I have a MF104 and MF101… and I just tried to set the drive at full clockwise : what a great Distortion: I love that compressed overdrive sound with my SG or my Fender on the CLEAN channel of my Peavey CLASSIC 50
If someone are interested I can post some Audio demo 
I’ve got a Delta Blues…Peavey makes great amps! I’d like to hear your drive !
HI SORRY to not have answer you before!!!
I have made some sample in WAVE format :
Guitar Gibson SG 63 plug in the MF101 then out plug in a PEAVEY CLASSIC50 2X12.
RECORD with a SM57 MIC front the HP in PROTOOLS: no eq , no compression in protools, just the Sound of the AMP.
You will listen the overdrive of the MF101 in BYPASS. The last SAMPLE5 is played with Mooger ON ( filter is on).
http://studiofargis1.free.fr/MOOGER/
Alx
I miss to explain the settings:
The drive of the MF101 was to 3 a’ clock… The amp was on the CLEAN channel