How is Mid Fi defined?

You might own a mid fi system if all your grown kids still have thier naturally crooked teeth.
You might own a mid fi system if your house has only two rooms, and a DELUXE model outhouse. (two seats, no waiting).
You might own a mid fi system if your idea of a financial retirement plan is to bury a hundred bucks in your backyard.
You might own a mid fi system if your wife moonlights at the local greasy spoon truck stop.
You might own a mid fi system if you have never been outside the very same county you were born in.
You might own a mid fi system if your 'higher education' was in a brothel.
You might own a mid fi system if you hunt Possum for fun AND profit.
You might own a mid fi system if your family is still in Mexico and you send them money every week via Western Union.
You might own a mid fi system if your favorite sport is hittin' the spittoon and makin' it ring all per'tty.
You might own a mid fi system if your car is a Ford.
You might own a mid fi system if your car is a Chevy.
You might own a mid fi system if your car is a Buick.
You might own a mid fi system if your car is a Chrysler.
You might own a mid fi system if your car is a Toyota.
You might own a mid fi system if you get paid by the hour.
You might own a mid fi system if you live off SSI.
You might own a mid fi system if your parents are dirt poor and you are going to college.
You might own a mid fi system if you are rich and are NOT an audiophile.
A few ideas for starters there....

has no tubes.

What's good for the goose, is NOT ALWAYS good for the gander. ;)

Mid-Fi is anything anyone can buy at a Big Box store. Same product sold by a boutique store automatically becomes Hi- Fi. :-)

"Components primarily designed to meet the needs of audiophiles and music-lovers are worthy of the appellation "high-end," no matter what they cost. The much wider range of products whose genesis lies purely in the need of their manufacturer to fill a gap in their product line or attack a previously unoccupied niche in the market, or even just to flesh out their business plan, are "mid-fi" by definition. It's as simple as that. The next time you find someone equating the words "high" and "end" with "high-priced," or feeling that low-priced is automatically equivalent to "mid-fi," remind them that it ain't necessarily so."

Source: http://www.stereophile.com/asweseeit/1194awsi2/