The amorphous Cu₅₀Zr₄₀Ni₅Ti₅ alloy was produced by melt-spinning at wheel speeds of 35, 38 and 41 m s⁻¹. The resulting melt-spun ribbons were characterised using X-ray diffraction (XRD), scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDX), differential scanning calorimetry (DSC) and Vickers microhardness (HV) tester. The XRD and SEM results revealed that the rapidly solidified ribbons have a fully amorphous structure. After partial or fully crystallisation of Cu₅₀Zr₄₀Ni₅Ti₅ ribbons upon annealing, the microstructure had uneven and irregularly shaped features with the existence of Cu₁₀Zr₇, Cu₈Zr₃, CuZr and FCC-Cu phases while as quenched ribbons had featureless microstructure. The SEM-EDX analysis confirmed compositional homogeneity of the Cu₅₀Zr₄₀Ni₅Ti₅ alloy ribbon. According to DSC results, the amorphous ribbons exhibited distinct glass transition temperature (T_g) and wide supercooled liquid region (ΔT_x = T_x − T_g) before crystallization. Accordingly, T_g and ΔT_x are around 409–414 °C and 37–54 °C, respectively. The microhardness of the as-quenched ribbons was about 522 HV while it decreased with increasing annealing temperature and had a value of 463 HV for 725 °C.