Add circuit diagram of typical 12AX7 amplifier

james34602 · james34602 · commit 927bf5bdf63b · 2018-09-12T20:40:34.000+08:00
diff --git a/Misc/Valve/TubeTonestack.svg b/Misc/Valve/TubeTonestack.svg
@@ -0,0 +1,399 @@
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