The two 6J5 triodes look fine !
Headphone amplifier with two 6J5 triodes
After the triodes, low noise ic's NE5532P take care for more amplification.
Now I just have to find a simple power supply unit capable of delivering +/0/- 15VDC to get it to work.
Circuit of the amp;
View of the "Sint Lievensmonstertoren" in Zierikzee.
Zierikzee is the capital city of the island of Schouwen-Duivenland in the province of Zeeland; the island just below the island where I live, Goeree-Overflakkee.
Sint Lievensmonstertoren, Zierikzee
The start of the construction of the tower was in 1454. The original design shows that the final height should have been 130 meters, but due to a lack of resources this value was never reached. 62 meters is the height at this moment. Nevertheless an amazing achievement of the people in the 15th and 16th century.