Round evaluation PCB for optical bench applications. The circuit is designed for fast counting and timing applications. The output is AC coupled and matched to 50 Ω. It provides excellent single photon resolution and timing performance. The PCB provides two outputs: SIGNAL OUT (90% of the signal) and MONITOR out (10% of the signal), useful eg for simultaneous timing and energy measurements with scintillator. It can also be used for high dynamic range measurements, e.g. to measure single photons with amplifier at the SIGNAL out while simultaneously acquiring the unamplified signal at the MONITOR out for higher light fluxes.