Here are the famous Perpetual Twins, P-3A DAC and P-1A Upsampler. These two units virtually revolutionized affordable digital processing with their amazing resolution. If you really want to hear what they can do, however, get a set of 4 Point Pods and place 2 underneath each unit as shown- it's an inexpensive solution that improves dynamics and soundstage size and makes these great components even greater!