Seigfried Linkwitz on the UPA-500 Aug 15, 2014 17:40:11 GMT -5 Dark Ranger likes this Quote Select PostDeselect PostLink to PostBack to Top Post by mauriceminor on Aug 15, 2014 17:40:11 GMT -5 Renowned speaker designer Siegfried Linkwitz tells of using the UPA-500 for his latest design - the LXmini.www.linkwitzlab.com LXmini > Amplifiers