Genuine Toshiba 2N3055? and opened transistor photoelectric effect

Toshiba 2N3055 genuineness - flodins - YouTube
https://m.youtube.com/watch?v=ZG15k29yT0o#fauxfullscreen


The Toshiba 2N3055 on the Pleiades 2N3055 one transistor amplifier may be a fake one. It had never been opened. Yet it sounds good. Perhaps due to the low voltage and current operation.


The BD139 gives better high frequency detail or extension, see previous posts.