The 110 Tuned Amplifier/Oscillator has a frequency range of 1Hz to 110kHz. The unit provides four outputs simultaneously: a second order (resonance) bandpass, a second order band-reject, or notch, a second order all-pass, and a "float" output. Can function as a wave analyzer, a selective AC voltmeter, a distortion analyzer, a low-noise preamplifier or a general purpose oscillator.