Preamp for Magic Eye VU meter
After a bit of research i found this amplifier schematic http://afrotechmods.com/tutorials/2017/01/17/how-to-make-a-simple-1-watt-audio-amplifier-lm386-based/
After connecting to input terminal of the vu meter, the eye moves and works great. It doesn't have to close fully for me, so 12v power supply is enough.
:)