Luxman T-117(1988, $600/orig $550,photo,schematic)search eBay An extremely sensitive and moderately selective digital tuner, the T-117 has 4 gangs and 4 filters and should be easy to modify for sharper selectivity. Don Scott's review in Stereophile called it "one of the best sounding tune...
Again, I don't accept the false premise that "low coloration" exists wherever there are cursory, superficial indicators - like a line on a screen - and that this is inherently accompanied by real organic, authentic musicality. It absolutely is not; I've never once heard a technophile system...