Nope. It can only make sound worse. Topping input impedance is extremely low, people should be aware of that. It is below 2kOhm if I remember correctly, it should be close to 100kOhm on XLR. When paired with Pegasus you can expect high frequency roll off, increasing distortions, as ladder is overloaded by low input impedance of the preamp.
In addition, it is nested lopback opamp design, it measure well, but will react poor to the high frequency components coming out of a ladder. For a ladder DAC like this, Class A discrete amplifier is better, or a tube.