Installation of the MPM bridge mechanism into existing and new bridges.  Improve the tone of new and second-hand stringed instruments through installing all the patent inventions listed under Products.  Installation of pick-ups and instrument service All installation and modification work on instruments is carried out by Franz Moser personally, and he carefully checks the quality. A Double Bass from Grünert, with MPM bridge und built-in pick-ups from Schertler and Wilson, will be available from May 2004 onwards, so you can try out the new sound experience. Also at your disposal is a Double Bass from Holzlechner, with waxed surface, specially fitted with all our own patent products. Strings: Velvet Strings