TDK SR90 High Position Cassette Tape - Unopened, Unused HIGH POSITION TYPE II Digital Compatible! Super Response! Dynamic Sound! This item is completely discontinued, but after a move, it was completely forgotten in a storage case in my home's wardrobe room. I will sell it to those who are particular about the sound of cassettes, such as Walkmans. The market price on Yahoo is 2,000 yen per piece, so I will sell it cheaper than that. If you purchase with other cassette tapes, I will offer a discount, so please consult with me! Tapes used for normal position are made of iron oxide, and the sound is neither good nor bad, the so-called ordinary sound. Tapes used for high position are a compound of cobalt and iron oxide. It is characterized by low noise, clear sound, and clear high frequencies. Tapes used for metal position are pure, unoxidized iron, and have the impression of powerful sound.