Audiochrome: Cassette tape measurements: modern-day tapes NAC Studio Master 799, Audio Pro 731, Ferro Master C456, C256, ATR ProChrome, Master, MDS, RTM Fox K7
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Amazon.com: Premium Analog Recording Tape by ATR Magnetics | 1/4” Master Tape - Modern Classic Sound | 7” Plastic Reel | 1250' of Analog Tape : Electronics
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