With the best possible source (or sources) established, the all-important musical signal usually needs a bit of assistance before speakers can relay the music to your ears. This is where amplification and control comes in. In the case of all-in-one products such as Linn’s Majik DSM or Selekt DSM, this is already provided for you. When you climb higher up the HIFI ladder, consider combinations of preamplification, power amplification and active crossovers (e.g. a Linn Exaktbox) to provide the cleanest path from source to speaker.