audio

So this port is broken and i cant find another one like it anywhere. maybe im looking for the wrong component since im not that good with components yet. Its a mchammer 1200w markII amp if that helps anything. is there any way i could fix it with just buying a single new port. i think it is...

Hello everyone I need help please I dont have 2n4401/2n4403 Also irf540/irf9540 What can I exchange for them? I have added a picture to the circuit