TOBIAS GRAU will be presenting the current collection of luminaires for both the home and the office in his Cologne showroom. The focus is on the JOHN lamp that comes in three new colours – sand, charcoal and titanium – and on the XT-S range of office lighting, where users can switch between six predefined light colours in the range from 2700 to 6500 Kelvin. Alternatively, XT-S is also available with humancentric lighting (biodynamic light).