I've bought and sold instruments with these guys. Owner Steve and his team are well informed, trustworthy, and acquire a unique collection of both classic and oddball instruments. I learn something new everytime I interact with these guys. Anyone who loves vintage instruments will enjoy browsing their site and store. An important part of Brooklyn's musical community.
Pros: they actually know what they are talking about and selling
Cons: this is not ebay -- expect to pay a fair market price
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