The Ultimate Preamplifier is a game changer for the pre-processing of audio signals in both the digital and analog domains before the signals are fed to the power amplifiers. For the first time you have three different functions in one package and which do not compromise in any application. These are the DSP Stereo Preamplifier, DSP Multi-channel Pre-amplifier/Crossover/Signal Processor, and Direct-through-DAC. All three functions employ the outstanding performance capability of the ES9028PRO 32 bit Sabre DAC from ESS Technologies.