1. Michael Koster

    What's the advantage of E-linear

    Specifically, what's the advantage of E-linear over simple plate-grid feedback. As I surmise, e-linear is essentially ultralinear plus G2-G1 feedback. In what way would this be superior to plate-grid feedback? Thanks, Michael
  2. TheGimp

    UltraLinear Screen Drive

    Most tubes respond well to 40% screen taps on ultralinear transformers. However, there are tubes suuch as the 4164B that require greatly reduced screen voltage (250 max) wrt plate/anode voltage (700). Acrosound made a transformer specifically to address this (TO-350) with the ultraLinear taps...