Thx. I have AF3’s too. So does the “Switch Blocks” make Amp1 turn off (if already on) and turn Amp2 on (if already off, rather than need to click each of their buttons independently, saving a step? Hope I’m understanding correctly.The Axe-Fx has two AMP blocks. With this switch I can switch between those, allowing up to 8 different virtual amps per Axe-Fx preset. Switching means bypassing one block and engaging the other.