I get more and more people asking for semi-valved harps and for that I use these: http://www.seydel1847.de/epages/Seydel1847.sf/en_US/?ViewObjectID=143072&Currency=EUR So far I had nobody complaining about these :-)) regards Ben Bouman www.customharmonicashop.com www.harmonicainstituut.nl www.marble-amps.com