Noise-sensitive applications require a high signal-to-noise ratio to achieve the needed sensitivity. Cryogenic cooling of these electronics is a suitable approach. This work presents the design and implementation of a preamplifier for highly accurate noise figure measurements of cryogenically cooled low-noise amplifiers in the single-digit noise temperature range. The proposed device is a 43GHz wideband, temperature-controlled amplification system with a programmable gain of up to 60dB. A complex three-path configurable circuit topology provides flexible high gain amplification over a broad bandwidth from 1GHz to 44GHz. This work demonstrates the functionality and usability by a proof of concept measurement.