Sbooster, formerly known as Squeeze-upgrade, is the first Dutch company that is specialized in the development of Plug & Play upgrade products for network music players, headphone amplifiers and or D/A converters. The upgrades are suitable for practically all product with an external PSU in the music chain including the network.

Sbooster focuses on innovation and emphasizes on the price/quality ratio. By combining new technology with smarter and more developed products , they are able to deliver high quality solutions at competitive prices.