Chosen Solution
Built-in speakers work well but if I plug any speakers via jack, left channel doesnt sound but instead there is static-buzzing, uh. Where is defect? Is it problem in the headphone jack or in the audiocontroller on motherboard? I didnt try to use bluetooth speakers :(
Try connecting a simple headphone rather than audio amplifier if audio in headphone comes alright then there may be problem with the audio amplifier, if headphone still sound bad then the problem with the hardware audio driver (Pre-amp.) of the laptop. i don’t know more abut macs, but in windows sometimes removing and re-installing the audio driver works.
