"Hi end" is relatively recent, and thus the confusion.
Originally, the term was High Fidelity, or Hi Fi for short.
As soon as that term was coined, people naturally determined that what was not Hi Fi, must be Lo Fi(delity).
Mid Fi? I don't remember when that came along, but I'm sure that it resulted from the need to identify the huge proliferation of better-than-lo-fi products (many of them Japanese) in the late 70's and 80's. Many sold through earlier versions of stores like Circuit City, Good Guys, Best Buy, etc.
But there really is a logical continuum -- lo-fi, mid-fi, and hi-fi. What keeps changing is what falls into the last two categories :~))
Originally, the term was High Fidelity, or Hi Fi for short.
As soon as that term was coined, people naturally determined that what was not Hi Fi, must be Lo Fi(delity).
Mid Fi? I don't remember when that came along, but I'm sure that it resulted from the need to identify the huge proliferation of better-than-lo-fi products (many of them Japanese) in the late 70's and 80's. Many sold through earlier versions of stores like Circuit City, Good Guys, Best Buy, etc.
But there really is a logical continuum -- lo-fi, mid-fi, and hi-fi. What keeps changing is what falls into the last two categories :~))