Morrow Audio will fit the early McIntosh... I have them, the 4 series, and all levels 1-4 should work well with the binding posts (no spades, naked wire). I was amazed at the compatibility and musicality of the Morrow + early McIntosh. Mike Morrow advertises here. Give him a call: 60 day money back satisfaction.
:) listening,
Ed
:) listening,
Ed