Have you saved all those mix tapes you made in the ’80s and ’90s? This is your day for vindication.

Toronto’s Dupe Shop, a store specializing in cassettes, is celebrating its grand opening Saturday, timed to the fourth annual International Cassette Store Day.

“We are going to be selling pretty much exclusively cassettes,” said Malin Johnson, manager of the shop at 1185 Bloor St. W. near Brock Ave., which promises a big selection and even a DIY station for customers to make their own mix tapes.

“Not only do we have local labels but we have international labels represented here and we’re getting more and more stuff in by the day. But we also have a pretty good selection of new old-stock,” Johnson said, noting the store is well-stocked with 1990s rock bands such as the Red Hot Chili Peppers, Guns ‘n’ Roses and Oasis.

“We kind of want to make this a hub for cassette culture. It’s kind of a cool, eclectic mix we’re creating,” Johnson said.

The Dupe Shop is one of two local outlets participating in Cassette Store Day, which recognizes the unlikely, small-scale resurgence of the obsolete analog music format in recent years, first sold as a nostalgic novelty by indie acts, and increasingly by more mainstream ones.

Even Urban Outfitters sells a cassette version of Purpose by Justin Bieber, whose core fans were born well after the Walkman’s heyday. It sells for $15, about the same as the album’s deluxe CD version, with presumably superior digital sound.

“When I first opened the store (last year), I only had about a dozen cassettes out at a time. Then it was two dozen. I was mostly stocking ’90s-era bands, albums that are harder to find on vinyl now and usually expensive,” said Cal MacLean, owner of Shortstack Records at 256A Queen St. W., the other location celebrating the humble cassette on Saturday.

“But people always asked if we had more tapes. So I’ve been building a larger inventory to put out for Cassette Store Day that will include classic rock, heavy metal, hip-hop and some other genres,” he said.

Johnson said there’s an enduring appeal for cassette tapes and vinyl in the age of downloadable digital music.

“I think individuals have a longing for a tactile experience with their media,” he said. “People get to connect on their phone to listen to their music. But cassettes — and vinyl and even CDs — offer a real tangible experience. So not only do you get the music, you get to put the cassette into the cassette player and push the button.”

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To MacLean, the mix tape is what set the cassette format apart.

“It really meant something to make one for someone, choose the songs and sequence them, make the artwork. So I think cassettes are really rooted in that personal experience in a way that digital formats have had a hard time recreating,” he said.

Price will also be a draw on Saturday, since most cassette tapes at Shortstack sell for $5.

“The low price is part of the appeal, I think. That’s true of most vintage formats. People like to own a physical copy of their music and build a collection without necessarily spending a fortune,” MacLean said.