Juergen Grau located in Rohrbach, Germany has designed and created a new STC Super Triode connection power amplifier Mk II Bausatz which has this week launched by a Kickstarter to raise the required ...

This Design Idea is a reprint of an earlier one that contained errors in graphics (Reference 1). Even though 6L6 beam-power tubes have been around for 66 years, they are still quite popular for use in ...

Icon Audio has unveiled details of its Stereo 845 pure triode push-pull integrated valve amplifier. The Stereo 845 comprises four matched 845 valves, two 6SL7 first-stage valves, two 6SN7 ...

Control grid: controls the cathode current; operated at a negative potential relative to the cathode (corresponds to the JFET gate); Screen grid: electrostatically screens the control grid from the ...