Compact Cassette tape types and formulations - Wikipedia
All That Data: Tape Deck Frequency Response and Headroom (Jan. 1981)
frequency response of cassette | FM DXing
ABEX Frequency Response Test Tape TCC-182A, 8k/1k/125Hz | eBay
Cassette Alignment Test Tape
Calibration Cassette Frequency Response 15kHz 70us : BidBud
Do cassette tapes have the highest quality of songs (FLAC quality)? Because I heard all song recorded in high quality and not like digital which was suppressed. - Quora
Compact Cassette tape types and formulations - Wikipedia
Frequency response graphs for various cassette tapes | Tapeheads.net