I would get a preamp + amp combo that supported long runs of XLR cables. You could stuff those cables under the floor board easier (with respect to sound quality) than the speaker cable. I know the professional grade Benchmark StarQuad XLR that I use can work in your scenario well for very long runs. I think my cables are 15 feet or 25 feet runs, it sounds excellent. Some smart guys on A’gon told me to makes sure my preamp-amp combo supports the AES48 XLR standard for long runs. I contacted the manufactures of gear I was interested in to ask about AES48 before I bought. For ex. Benchmark and W4S supported it and Luxman did not.
https://www.aes.org/publications/standards/search.cfm?docID=44
I know the Lyndorf 3400 can support XLR not sure about your 2200. You can also use the 3400 as a preamp only and output to different amps via XLR, I have done this in a demo of the 3400.
BTW - i though the preamp + DAC of the 3400 was really good. The amp section was not something I liked. When I went to an external amp via XLR the system sounded great. That was a $15K external amp but I think a Purifi amp from March Audio for under $2K would likely yield the same results.
https://www.aes.org/publications/standards/search.cfm?docID=44
I know the Lyndorf 3400 can support XLR not sure about your 2200. You can also use the 3400 as a preamp only and output to different amps via XLR, I have done this in a demo of the 3400.
BTW - i though the preamp + DAC of the 3400 was really good. The amp section was not something I liked. When I went to an external amp via XLR the system sounded great. That was a $15K external amp but I think a Purifi amp from March Audio for under $2K would likely yield the same results.