The 4 track format first appeared in prerecorded tapes in 1959. And 4 audiophile master recordings 7.5ips On top of that, there are 5 possible speeds (and one wild card) at which the tape can run.
There are indeed some great prerecorded 7.5 ips reel tapes that were commercially released Gently thread the starting segment of tape from the reel to be played into the uptake reel, ensuring that the inside surface of the tape will face upward on the player. It is analogous to folks dogging the cassette format when there are a few releases (like some on cro2 tape with dolby encoding) that sound better than any mp3 or used vinyl will ever sound.
