museumofmagneticsoundrecording.org 400 Manual.pdfThe Ampex Models 400A, 401 A, 402 and 403 magnetic...
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museumofmagneticsoundrecording.org 400 Manual.pdfThe Ampex Models 400A, 401 A, 402 and 403 magnetic tape recorders are audio recorders utilizing the standard 1/4 inch wide tape. Models