RDL PT-AMG2 Portable Audio Signal Generator & MonitorThis portable audio instrument is comprised of a precision audio oscillator, precision level meter and speaker. The 700 Hz oscillator section features two outputs. The balanced XLR output is front panel switch selectable for MIC or LINE level (pro level). The unbalanced output operates at 10 dBV (consumer). Output stability is suited to accurate bench top audio testing. The audio metering circuit features two inputs, an LED meter and a monitor