Like many of B&W new speakers, the M-1 uses some of the features of the 800 series, such as the Nautilus tube, neodymium magnets, four inch glass fiber midrange drivers, and one inch metal dome tweeter. Stands for the M-1 speakers can be purchased separately. The stands have a powder-coated base and a powder-coated hollow aluminum extrusion and several plastic molded pieces that cling to the M-1 speakers and keep them secure and aloft.