Those who have done their homework will know how good the REGEN is. This wonderful product sits between a DAC and a computer. The sound improvement is very very good for such a small investment.
The manufacture says 'The USB REGEN takes the digital audio stream from your computer or other music streaming device, and generates a completely new USB data signal to feed to your DAC. It accomplishes this by combining a
carefully chosen USB hub chip with an ultra low-noise regulator and
low-jitter clock. Importantly, it does so with ideal impedance
matching—right at the input of your DAC.