Always consult the Owners Manuals and FAQs first.
FM3 information is being added as it becomes available, but it's preliminary and not final until release
Quad Chorus block
Available on which products
- Axe-Fx III: no
- FM3: no
- Axe-Fx II: 2 blocks
- AX8: no
- FX8: no
Channels or X/Y switching
- Axe-Fx II: no
The Quad Chorus block uses much more CPU than the regular Chorus block.
Replicating the Quad Chorus on the Axe-Fx III and FM3
"You can use the Multitap block as four choruses." source
Read the Axe-Fx II Owner's Manual.