This high-voltage DC-DC amplifier provides a stable and low-noise output voltage for quantum system applications. It uses resistive feedback to ensure accurate voltage control over a 0 V to 300 V output range. The amplifier features an output voltage ripple below 15 mV, making it suitable for noise-sensitive quantum devices. It is intended for use as a bias or drive supply for components such as single-photon detectors and electro-optic elements. The unit is available in versions designed for terrestrial laboratory systems and space applications.