A damaged 12AU7 can cause abnormal voltage?
Finished, but not try to add headphone yet.
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fst3388.myweb.hinet.net%2F2011%2F7823.jpg&hash=1322e9ec9c97a53f784749e680d6b2af39300fe6)
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fst3388.myweb.hinet.net%2F2011%2F7827.jpg&hash=3c871cdd1ac9aec55c0bcb306163f363174ee589)
Two switch, Turn on heater first, Then high Voltage.
(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fst3388.myweb.hinet.net%2F2011%2F7828.jpg&hash=d357d8534460c73bb5b79c45edc24501275e00ee)