Denon HD-M90 - 1994 - US

Denon are consistently the most expensive blank Cassette brand out there.

This is their top of the line Type IV - Metal. The manufacturer recommends these to be  recorded at around +7db (look at the back of the wrapper).

Note: This single available cassette has four exceptionally minor rips on the front side of the wrapper. See picture and see if you can actually detect them.

About Denon:

Denon (株式会社デノン Kabushiki Kaisha Denon) is a Japanese electronics company that was involved in the early stages of development of digital audio technology, while specializing in the manufacture of high-fidelityprofessional and consumer audio equipment. For many decades, Denon was a brand name of Nippon-Columbia, including the Nippon Columbia record label. The Denon brand came from a merger of Denki Onkyo and others in 1939. In 2001, Denon was spun off as a separate company with 98% held by Ripplewood Holdings and 2% by Hitachi. In 2002, Denon merged with Marantz to form D&M Holdings. On March 1st, 2017, Sound United LLC completed the acquisition of D+M Holdings.

Denon HD8 - 1988 - US

Denon HD-M90 - 90 Minutes: These tapes have "Huron Electronics" store price stickers. Huron Electronics was a Hi-Fi store located in downtown Toronto, Canada. They can be removed clean, but you will need a lot of patience.