Output stage amplifier with compensation circuitry

An output stage amplifier circuit in accordance with the present invention overcomes many shortcomings of the prior art. A output stage amplifier circuit for providing a high output voltage and current reference signal suitably includes an output buffer configured with a compensation circuit for reducing disturbances introduced into the output stage amplifier circuit by voltage supply rails, such as parasitic ringing and other disturbances. The compensation circuit can suitably comprise a first compensation device, such as at least one capacitor, and a second compensation device, such as at least one capacitor. The compensation devices are suitably coupled between an input terminal of the output stage amplifier circuit and a pair of transistors proximate a pair of output transistors of the output stage amplifier circuit, and are configured to provide "pole-zero" compensation to the output stage amplifier circuit.