McIntosh still is in business and still makes some amazing equipment in the same building in Binghamton NY where all of the amps we speak of on this board were built. The problem is that cost tons of money.
See these links for example:
http://e-piphany.com/wp-content/uploads ... celist.pdf
http://www.mcintoshlabs.com/us/Products ... ctId=MC302
The modern equivalent of the MC2300, the MC302 has a retail price of $6500!!
I do not know much about amps and circuits and what makes them special but I do know that it cost a lot to hand make amps like this. It's probably at least one reason you don't see many starving guitar players lugging around a 98 pound MC302.