The thing with the Joyo AC Tone is if you are using it with an amp, set the amp to the sound you like fo what you are wanting to play with the pedal off, then use the pedal to change the tone to another sound. That means that you effectively have two different sounds. For example if I were to use my Vox AC-30 non Top Boost, I'd get the old 1960 sound on that, then add the Joyo to give me the Top Boost 1964 sound at the press of a switch. The other way round if I used by Top Boost amp, I'd set the amp to give the sound of 'Flingel Bunt' and compensate using the Joyo to get the old 'Apache' sound by removing the bass and some treble and adding the mid, wth the 'voice' and 'drive' to taste.
The Joyo can also make your guitar sound like either of the two Vox sounds I'm talking about when plugged directly into a PA mixer, you need to begin by setting the chanel flat i.e. no bass, mid or treble added to start with, dependent on the sound of the speakers. I find that reducing treble and bass and pushing the mid helps when horns and 15" speakers are present. You can then shape the Vox tone with the Joyo in a similar way to my settings in the photographs. Be aware that all PA speakers are slightly different and that my settings work on my kit, but may need more or less knob tweaking on your own gear to achieve the same sound. Most of all, enjoy the adventure.