It was one of the big downsides of the Helsinki city center. There was no big and well sorted electronics store in the city center. But those times are over. With the new lower level of Forum Gigantti finally came to the center.
Normally Gigantti can only be found in industrial areas outside the city and only be reached by car. The new one at Forum spreads across two levels though and has a pretty decent selection of electronics.
Check it out!