Demonstration of our NN spectral emulators for single main-sequence stars. Each panel shows the predicted XP spectra with different stellar parameters, where the x-axis is the wavelength and the y-axis is the logarithmic flux (10⁻²⁰ W m⁻² nm) normalized to a distance of 10 pc. Top panels: spectra at fixed absolute G magnitude (M_G) with different B − R color. Bottom panels: spectra at fixed B-R color with varying M_G.