Battery life will drop to approximately 20 hours (depending on microphone) when phantom powering is engaged (still enough time to get through an average session). When running powered by battery alone, you should expect in excess of 50 hours of operation with phantom power off. An internal 9 Volt battery, or optional external 12V power supply (or any combination of USB, battery & power supply) can be used depending on application. The USB Dual Pre is powered via the USB bus. Each of the 1/4-inch TRS outputs is buffered low impedance balanced.
Inputs can be either XLR balanced or 1/4-inch TRS. Each of the two low noise input channels has up to 48 dB of clean gain with signal present and clip LED indicators. It is designed to work over a wide variety of applications from remote field recording to desktop/studio tracking. The USB Dual Pre is a full-featured high quality dual portable preamplifier and computer interface packed into a compact rugged case.
ART Pro Audio USB Preamp Portable Interface with Dual Microphone Preamps
