Short answer: LOL Sorry, long gone.
Long answer: Brief history of DSE / Tandy (Radio Shack) in Australia:
Mid 1970's: Opened up a few stores in larger cities like Sydney. Sold mostly car radio stuff.
Late 1970's to late 1980's: Expanded throughout the whole country, most medium sized towns had one and capital cites had a few stores each. Staff mostly knew what they were doing, could explain basic stuff to you like how to solder on a mic plug. Stores were always busy.
1990's: Mobile (cell) phones took off and they made a ton of $ selling them, so the electronics was pushed to a small area at the back. The front of the store sold phones, phone company plans, and phone accessories like chargers and car mounts.
2000's: Was pretty much a cellphone seller by now, electronics almost gone and then removed altogether. Experienced staff fired and replaced by juniors that knew how to install a phone app, sell carrier plans / extended warranties and operate the cash register, but little else.
2010's: Phones could be bought directly and in gas stations / supermarkets, so they moved to becoming an appliance retailer like Kmart, selling ultra cheap toasters, waffle irons, and food blenders. Stores were always empty and you wondered how they were paying the rent.
2016: It all came crashing down and all stores, hundreds of them, closed down.

2017 - today: Branding bought by Kogan, an online-only seller of cheap china gadgets similar to Temu and Ali Express. DSE exists in name only as an online-only clone of Kogan.
Long answer: Brief history of DSE / Tandy (Radio Shack) in Australia:
Mid 1970's: Opened up a few stores in larger cities like Sydney. Sold mostly car radio stuff.
Late 1970's to late 1980's: Expanded throughout the whole country, most medium sized towns had one and capital cites had a few stores each. Staff mostly knew what they were doing, could explain basic stuff to you like how to solder on a mic plug. Stores were always busy.
1990's: Mobile (cell) phones took off and they made a ton of $ selling them, so the electronics was pushed to a small area at the back. The front of the store sold phones, phone company plans, and phone accessories like chargers and car mounts.
2000's: Was pretty much a cellphone seller by now, electronics almost gone and then removed altogether. Experienced staff fired and replaced by juniors that knew how to install a phone app, sell carrier plans / extended warranties and operate the cash register, but little else.
2010's: Phones could be bought directly and in gas stations / supermarkets, so they moved to becoming an appliance retailer like Kmart, selling ultra cheap toasters, waffle irons, and food blenders. Stores were always empty and you wondered how they were paying the rent.
2016: It all came crashing down and all stores, hundreds of them, closed down.

2017 - today: Branding bought by Kogan, an online-only seller of cheap china gadgets similar to Temu and Ali Express. DSE exists in name only as an online-only clone of Kogan.