Last weekend we had the Beijing Guitar Duo in our series. They played a very impressive concert and turned out to be two fantastic persons as well. Anyone who has the chance to go and see them: GO 
Otto Vowinkel is a household name in the classical guitar world; a renowned luthier with customers all over the world.
His instruments are physically light, easy to play, ultra-responsive and very powerful. His guitars have outstanding tonal qualities, evenness in sound colour and a perfect intonation.
Otto blogs about making guitars, guitarists who play his instruments, festivals he visits and ‘his’ guitar series Meesters op de Gitaar. He also writes about guitar maintenance.