7
Speaker outputs.
Your amp has one 16 ohm output and two 8 ohm outputs.
Use the 16 ohm output for a 16 ohm load.
Use a single 8 ohm output for an 8 ohm load.
You can also connect two 16 ohm loads to the two 8 ohm
outputs.
The output transformer of the Custom 22 is robust enough to
manage a 4 ohm load, using the 8 ohm outputs, but we do not
recommend lower than 4 ohms.