audio systems engineering

35 4conductorplug adapter amplifyingsound audioequipment audiomixers audiosources audiosystems audiobooks background blue cable clearcommunication closeup communication connect connection connector datalines electronic electronicdiagram electronicgadgets engineering entertainment equipment goldencolor headphonejack headsets interconnect isolated jack male metal microphone music musicalperformance personal devices plug podcasts privatelistening professionalinstallations radio signalprocessors speaker stereosignals techlovers sound trrs transmissionofsound