You are right. The English is not my native language , I'm using a translator. Sorry for the confusion . I'll try to improve .
"Audio systems" I mean PA, Power + speakers , etc. . Not instrument amplifier .
" listening to the right thing" Haha . I mean listen to what I do in the POD , and the means ( "Audio systems" ) to respond without altering the results. For example , highlight or hide certain frequencies.
"Same possibilities to create a sound as if real amp in my house . " Same as above . For example , working with a real instrument amplifier , only I worry about adjusting knobs to get the right tone because then I get the whole cabinet (speakers and amp) and I have not altered more than the usual reverbs from different environments . But working with emulators , things are usually very diferetnes from one environment to another , as it depends on audio systems that are in each room.
Thanks for the time and patience.