I have not tried LP yet as I don't always have good luck with beta versions. I recall there there is a JCM 800 tone stack to choose from? I'm just curious as to how accurate it is to the actual amp. I have a hard to find Marshall manual that shows freq centers for the tone stack. I have surprised a few techs, even ones that have been working on them for 40 years with the info there regarding the EQ . Most people would assume Presence operates at a higher frequency than Treble but in 2204/2104/2202/2103 it's not the case. The only difference between the 50 watt models and the 100 watt 2202/2103 is the Mid center 50 watt is 500hz and the 100 watt 600hz So here is the 100W: Treble 35 dB @ 10kHz Middle 9.5dB@ 600Hz Bass 15dB@ 50Hz (pretty low huh?*) Presence 6dB@ 3kHz. I just wonder if you measured the liquid profile stack how close it would come to this. I have some JCM 800 profiles of my 800s and other 800s and always despised the tonestacks in the actual amp and appreciated the stock tone stack in the kemper that always seemed to me like everything was in the right place making it more like I was fixing it in the studio rather than that funky tonestack. You can of course make the original 800 sound great but often you have to have some odd settings to get it to sound right. Of course I see where some people might want the option ( I have no idea why) but personally you can keep that lousy 800 tonestack in the 800s and I'll take the Kemper one over it any day. When I do try LP I'm going to check it out and although I don't have the equipment to accurately measure the tone centers, I'll know right away how close it is to the "real thing" because choosing an 800 tone stack will make it hard to dial in and easy to make strident.
* It's no wonder that with the bass centered @ 50Hz that the bass control in these amps seems weak as The lowest string on the guitar is like 80 Hz. I never understood why Marshall centered it at 50Hz where there is not much there from an electric guitar at all. Almost more like a shelve.