A full-featured professional audio recorder and voice recorder that can be expanded with USB audio interfaces as well as external microphones. Professional adjustability, record audios up to 24 bit/96KHz resolution. Built-in stereo microphone array and external microphone jack with variable sensitivity and analog audio input, for digitization via wire, for rugging analog recordings in Hi-Res quality, with OLED display. The recorder can be operated with AA-size batteries, is equipped with an SDXC card slot, as well as an OLED display. With full metal encapsulation. Operating temperature from -40°C to 85°C, operating humidity between 20%-80%.