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.
Zierikzee visit, June 28, 2017