06/15/2011 News Bryan at Zynsonix builds a Custon Dynakit ST-35…..Check this out! DIY Audio Electronics from Zynsonix.com: A Customized Dynaco ST35 Kit You may also like 7199 Tube is Discontinued In 2007, Sovtek abruptly ceased production of the 7199 (Triode/Pentode) tube. The remaining supply of… We increased our inventory! Our Dynakit black covers continue to be a very popular item. We have increased our… Dynakit ST-35 YouTube Videos Check out our new Dynakit ST-35 videos now!