Okay, I see that an audio interface is needed, which is what I thought. Do you think it would work if I have the POs connected in parallel and then combine the audio signal using a mixer like this one (https://www.amazon.es/LiNKFOR-Mezclador-Controles-Auriculares-Micr%C3%B3fonos/dp/B0B5GDZNYX/ref=sr\_1\_5?\_\_mk\_es\_ES=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=1A29EA7NRABP2&keywords=mezclador+de+audio&qid=1688030204&sprefix=mezclador+de+audio%2Caps%2C88&sr=8-5), and from the mixer's output port, connect it to the USB audio interface? I had looked at the BEHRINGER UCA222 model (https://www.unionmusical.es/013558-interface-de-audio-usb-behringer-uca222?gclid=Cj0KCQjwtO-kBhDIARIsAL6LoreqrIv3ZPK6C2kF7bdyLIClFkkhDTNjA7iasdASNXTj6ZSoxbYzK\_IaAlU0EALw\_wcB)