A term arising from the 1950s denoting a high fidelity audio system. The term fell out of use after the advent of stereo, but is used today to denote a class of audio equipment above the mass market which reproduces audio faithful to the recording. The term is best used to differentiate real audiophile audio equipment from the myriad of clock radios, cheap home theater in boxes, and offcourse systems designed for listening to music of the urban persuasion.
Low priced high fidelity system: Energy speakers,Yamaha or Pioneer electronics.

Mid priced high fidelity system: Magnepan Speakers, Nad electronics.

High priced high fidelity system: JmLab Utopia series loudspeakers with Krell electronics.

Dude, I have a kick-ass hi-fi system, let's go listen to it.
by Angsuman Roy April 4, 2006
vodka and orange carbonated drink.

much like a screwdriver, except with orange soda pop instead of orange juice, enducing a mad drunken sugar high when mixed with the right soda.
1:"Dude, we were bouncing off the walls at the rave from all the Hi-Fi's we drank last night."
2:"Who the fuck goes to raves?"
by HouseWares January 24, 2009
The way in which one person would greet another person named "Fi".

Also (erroneously) short for "high fidelity" - used to describe recorded sound that sounds faithfully like the original production of the sound. It's a term that originated in the 1950's (before stereos) to describe sound-recording equipment that provided faithful reproductions, but nowadays is used mostly by audiophiles.
Fi: Hey there buddy!
You: Hi-Fi!

Pedophile: Come over here kiddie, these Bose speakers produce such high-fidelity sound!
Audiophile: No they don't.
by Pedophile May 17, 2008
The best band in the world. Consists of Stacy, Jamie, Brian, and Drew. Stacy is the singer and the songwriter, not to mention HOT. They are the band with the hit song "Flavor of the Weak" in 2001, and a semi-popular song "Another Perfect Day" in 2001. They now have a second album out, called "The Art of Losing", which released February 25, 2003.
American Hi-Fi was recently dropped from their record label, Island Def Jam.
by Amanda January 3, 2004
A tongue-in-cheek term dat ruefully refers to how costly a decent stereo system often can be.
Unless you happen to find a "gem" of a tower-system at a yard sale or thrift store, obtaining an above-average component-audio setup is usually a "hi-fi(nance)" undertaking!
by QuacksO January 1, 2022
A train station in Sydney that is near Richmond and sells electronics
They build the JB HI-FI Train Station because it does not let you return the product unless it is unopened and before 30 days of the purchase.
by Officeworks May 10, 2022
JB Hi-Fi Limited is a publicly-listed Australian retailer that sells and specialises in consumer goods. JB Hi-Fi has locations in Australia and New Zealand.
"mate I just when to Jb Hi-Fi and picked up a new phone"
by Paridot Dino March 10, 2021