The giant synaptic terminals play an important role transmitting information with exquisite precision and speed. The thalamus, an important center for the integration and relay of sensory information, is the brain region innervated by more giant terminals. These giant terminals act like drivers, delivering primary sensory information from the somatosensory, visual and auditory pathways. In the auditory thalamus, the drivers arise from the inferior colliculus. Surprisingly, we have observed a population of giant synaptic terminals in the auditory thalamus arising from the medial superior olive (MSO) and the lateral superior olive (LSO) of the superior olivary complex.To study these olivo-thalamic projections, we have performed precise injections of the bidirectional tracer biotinylated dextran amine (BDA) into the MSO and LSO of female adult rats. In addition, we analyzed statistically the morphology of the giant terminals using image analysis software.We observed that the MSO and LSO sent direct projections to the MGB, bypassing the inferior colliculus (IC). The MSO sends a direct projection to the medial and ventral division of the ipsilateral MGB and the LSO, to the medial and ventral division of the contralateral MGB. The synaptic terminals of the olivo-thalamic projections are giant and many of them make appositions with the soma of the postsynaptic neuron.This observation may change the way we understand the ascending auditory pathway and how auditory information about sound localization is integrated in the MGB, since this means, that some neural signals are reaching the MGB stronger and faster.