Blackstar POLAR 4 4-Channel USB-C Guitar InterfaceTailor made for guitar players, the Blackstar Polar 4 is an audio interface designed to make the recording process easier. The Polar 4 includes four FET based input channels, which are armed with 81 inspired microphone preamps and +48V phantom power. Moreover, you get per channel Enhance switches that activate a clip proof input setting, along with an amp like feel for instruments and added air and clarity for microphones. The Polar 4 includes two