Audio cassettes are the analog recording media legacy tape equipment still needs: blank cassette tapes for dictation machines, answering systems, and other equipment built around cassette mechanisms rather than digital storage. Where older recording or playback hardware remains in service, cassettes are the consumable that keeps it usable.
Match tape length and formulation to the recorder it will run in - older dictation and recording equipment is often tuned to a specific tape type, and running the wrong formulation can affect recording quality or wear the mechanism unevenly. Cassettes are a perishable, storage-sensitive medium; keep stock in a stable environment rather than ordering far ahead of need. For equipment nearing end of life, weigh continued cassette purchases against migrating the workflow to digital recording. COLAMCO supplies audio cassettes for the legacy recording and dictation equipment business, government, and education organizations still operate.