Does a search warrant need to be obtained before a subpoena can be served?

a search warrant, unlike [a] subpoena, is not a preliminary investigatory tool, but is rather a device for obtaining evidence intended to be used against a defendant where probative support of his guilt is already known to the authorities. Clearly, the concerns which require that constitutional protections attach when a warrant issues do not apply equally when an investigatory subpoena duces tecum is served.

Matter of Hynes v. Moskowitz, 44 N.Y.2d 383, 394-5, 406 N.Y.S.2d 1, 377 N.E.2d 446 (1978). ⁶