[Benoni]

Try putting the mic off axis. In the Free version you don't have as many mic's to choose from and the SM57 is not a modern model, it's based of the Unidyne III IIRC, and it seems to produce more hiss on high-gain amps.

Never mind what I just wrote there, I just opened Eleven Free and realized you don't have access to mic position.

You can also turn down the gain and treble.

You can use an EQ and dial out somewhere between 4-6khz give or take. And/or use a Low-Pass to get rid of some hiss.

The amp, cab, and mic models are pretty much spot on in Eleven and the Eleven Rack, so you would process them just like you would a real recorded guitar tone.

One thing I like to do (with the full version) is Bypass the cab in Eleven and use Impulse Responses since with Eleven we are limited to only 2 positions for each mic.