Here's my second build. It's named after a Philips hearing test unit from 1960, found in the basement of Zafar's shop on Queen Street, which donated the output transformer.
EF86 input, ECL86 triode gainstage and pentode output stage, EZ90(6X4) rectifier, and EM80 magic eye output power meter. Play hard, and the EM80 lights up brighter (fans out like a little radar screen)... play soft and it dims, comes to a fine vertical line. Here's a closeup of a beautiful mesh-screen Siemens EM80.
Here's a short mp3 of the Sonalgenic.
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