Andromeda is relatively sensitive and low impedance than others so sometimes noise bothers. This product helped a lot of reducing noise and improving dynamic range.
I liked to set its High adjustment settings than Ultra, so that it didn’t compromise Andromeda’s rich and clear mid range sound.
When I switched to Ultra, I felt it a little bland and more base added.
I tested Raspberry Pi -> HiFiBerry DAC+ Pro -> Vacuum tube amplifier -> iEMatch -> Andromeda.