For now, I have several Kingsley preamps that I use with the Two Notes CAB, and I love this for recording to my computer. Now, if I have a tube amp with an effects loop, can I route the "SEND" into the Two Notes CAB into the computer for recording? Regarding the stuff about load boxes/etc. I feel like I am missing something. For my purpose (recording), I don't need the amp's power amp or speaker - just the preamp section. I want to use the Two Notes power amp sim and cab sim. Can I run it this way without breaking something? Or do I still need a load box? Any help/education about this stuff would be greatly appreciated! I tried to research this, but I can't find a straightforward answer.