Description1+1 : 3.5 + 3.5LL1530 is a microphone input transformer used for matching a 200 or 800 Ohm microphone or to 10 KOhm or for matching a high impedance source to a microphone input.Documentsdatasheet Close 1+1 : 3.5 + 3.5LL1530 is a microphone input transformer used for matching a 200 or 800 Ohm microphone or to 10 KOhm or for matching a high impedance source to a microphone input.Documentsdatasheet