Gelster

Gelster is a defunct German brand of cassette recorders and players, primarily active during the 1970s and 1980s. While not as widely known as brands like Grundig or Telefunken, Gelster produced a range of consumer audio equipment, including portable cassette players (often referred to as "ghettoblasters" or "boomboxes"), in-dash car cassette players, and tabletop cassette recorders.

The company's products were generally positioned in the mid-range of the audio market, offering a balance of affordability and functionality. Their cassette players were known for their robust construction and relatively reliable performance for their price point.

Due to increased competition from Japanese electronics manufacturers and changing consumer preferences towards newer audio formats (such as CDs and later digital audio), Gelster eventually ceased operations. Information regarding the precise details of the company's history, such as founding date and specific reasons for its closure, is currently limited and dispersed. Finding archived documents and company records remains a challenge.