Best matched synthetic spectra from the BT-SETTL10 (green line), the DRIFT-PHOENIX (red line), and the BT-SETTL12 (pink line) libraries to J band spectra of the SINFONI spectral library (black line). The spectrum of DH Tau B was dereddened by A_V = 1.16 mag. The corresponding atmospheric parameters are reported in each panel. 2900/4.5/0.0 corresponds to T_eff = 2900 K, log g = 4.5 dex, and M/H = 0.0 dex.