The Longdog Story So Far…
Power supply 1: 6080 and ecc83 as shunt regulator powering output stage
Power supply 2: Low noise solid state regulator power driver stage
Driver stage using two stages of 5687read more
Circuit is a C3g Pentode voltage amplifier with VR tube screen regulator, then 300b driver to 1:1 amorphous interstage to GM70 grid. Output TX 7k amorphous.read more
Circuit is 6sn7 voltage gain, the el84 cathode follower direct to 211 grid, in a similar fashion to Ongaku. The A2 driver is capable of sending the grid at least 40v positive, so peak power is just above 30w.read more
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