Not sure what you can buy it for but for roughly the same (?) coin give or take, couldn’t you just purchase a MC2100 and know for sure it’ll be the ticket? Unless you want to experiment, then go for it and let us know the results.
Worst case scenario, you can sell it or have a power amp for a home stereo system if it doesn’t jive with the Jerry rig.
Good luck and hopefully someone has some experience with that power amp.