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Audio Cassette Speed Calibration Test Tape - Free Shipping Worldwide - Test Tapes - Audio Cassettes - Duplication.ca
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Analogue Media Technologies Pty Ltd :: Miscellaneous :: Test Tapes :: Audio Cassette Volume Calibration Tape
London Vintage HiFi Market - Calibration Cassette Speed Playback Professional Test Tape 3000 Hz (3 kHz) frequency Type II Clear Chrome for Stereo Cassette Deck, Walkman, Answering Machine, Boombox, Cassette Player -
Garagestudio - Found this speed calibration cassette for old cassette players among my old electronic stuff, old school 🤔 I think it was a long time since I had used it 🙂 . . . . . . #
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