Direct Coupled EL84-drive-EL84 Single Ended Amplifier

By request, here is the schematic for my dc coupled EL84-drive-EL84 amplifier.  If you build one, be sure  that you keep the heater to cathode voltage differentials within limits. The voltage divider I used works, but there are other ways to skin that cat. Be sure and follow the resistor power ratings specified and allow for plenty of ventilation – this amp generates some heat.  I did not implement any feedback, but you may want to.  If you do, an easy starting point would be to remove the cathode bypass capacitor on the preamp tube, and tie a 10k resistor between the speaker (+) and the preamp cathode.  If it motorboats, your output polarity is backwards, just reverse it to correct.  The power supply is configured to support two output channels.  Only one is shown for simplicity