Topping D50s DAC with Burson V5i-D Opamp Upgrade

After about 24 hours, its much better than the first place. The op-amp resolves the complexity of symphony orchestra layers and positioning well. Lower bass is tight and controlled, not boomy. The midrange is relaxed, clean and clearer than stock LME49720. The high is clean, smooth and fluidity, no sign of harshness from this range of digital components.