Interconnecting laptops & audio equipment
Check out the ESI U24XL , a USB audio interface, for a great way to get quality sound between laptop and mixer or amplifier. The ART DTI (Dual Transformer Isolator) will eliminate ground loops as a potential hum source and provide an interface between RCA-, XLR- and TRS- terminated cables. To add a couple of microphones, use a Focusrite Scarlett 4i4 , a USB audio interface with quality soundcard.