The Heritage Audio DTT-73 is a desktop format dual channel mic / line preamp based on the classic Neve 1073 input and output stages, minus the equalizer found on the original 1073 console modules. The HPF is retained, and a 1/4" direct input was added. This JFET DI is before the input transformer, so an instrument plugged into the front of the unit will pass through this transformer and for coloration. The DTT-73 runs off of a low-noise internal PSU, and adds a DI THRU output so that amplifiers can be used with the DI.