• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

6an8

  1. B

    Caution on using 6GH8, 7687, 6U8 tubes to replace 7199 or 6AN8 in phase splitter circuits

    The pin out for the 6GH8, 7687, 6U8 tubes has a design weakness when used in a phase splitter circuit that can cause high frequency stability issues with some amplifiers originally designed for the 7199 or 6AN8 tube. The 6GH8, 7687, 6U8 tubes all feature the pentode grid (pin 2) right beside the...
    • Bob@Blue5
    • Thread
    • 6an8 6gh8 6u8 7199 7687 high frequency stability phase inverter phase splitter
    • Replies: 39
    • Forum: Tube Audio
Back
Top Bottom