Subwoofer with XP-22 in unity gain

Given the Pass Labs XP-22 is set for Unity Gain on input 1, can I connect my sub to an RCA output and be able to feed the subwoofer?

Notes:

1. I am not using volume control on the MSB DAC
2. I currently have the sub plugged into the AVR
3. I know there is no real point to the XP-22 in the diagram - still want to know if this will work tho