If you are keeping it for years to come, it may not be a bad choice, however, even though I would expect improvement, I would not expect night and day improvement.. next, after the mod, your Adcom won't be worth much more than it is worth right now, so if you don't love the mod, then this may not be the best investment.
I would encourage you to figure out how much the amp is worth if you sold it today and how much an amp that you would really like to have would run and start with that comparison. For instance, (just a random number, I have no idea of value) you can sell your adcom for $800 and it would cost you $1400 to mod... without any other outlay of cash, you have to ask "What amp can I buy for $2200, am I better off with that than the modded Adcom"
Good Luck with your quest, Tim
I would encourage you to figure out how much the amp is worth if you sold it today and how much an amp that you would really like to have would run and start with that comparison. For instance, (just a random number, I have no idea of value) you can sell your adcom for $800 and it would cost you $1400 to mod... without any other outlay of cash, you have to ask "What amp can I buy for $2200, am I better off with that than the modded Adcom"
Good Luck with your quest, Tim