Sony, Marantz, Esoteric, Audio Research all come to mind.
If you're really concerned about not being left high and dry, it'd be wise to avoid companies that are essentially "one man" operations (although by doing so you're going to eliminate some outstanding possibilities).
If you're really concerned about not being left high and dry, it'd be wise to avoid companies that are essentially "one man" operations (although by doing so you're going to eliminate some outstanding possibilities).

