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Plus, you really don't need a buffered mult unless you're trying to split out a scaled CV to 4+ devices, as you'd need the buffering to mitigate voltage sag that can happen from this. But if you've only got two or three audio generators that (might) need this, the buffering is superfluous.
-- Lugia

I'll second that. I bridge up to four VCOs with stackables, all using the one CV line, and can keep the tuning perfectly.