I haven't done it, but it should work. Just A/B your guitar between the mesa pre and Randall. I did this with a 5150 I had a while back, the only drawback was that when I went over to my rack preamps I lost master volume on the 5150- meaning it would run full tilt so I had to drop the output of the preamps a lot. Not sure if that would apply to the recto or not.