smsl do100 pro

Dear experts, I need some advice. Which plan offers the best sound quality? Given that wireless connections are predominant, what kind of interfaces should be used between the intermediate devices and the speakers? Greatly appreciated !

Several SMSL DACs using versions of the ESS ES9039 chip have mislabeled filters. First, I will use the case of the DL200 using one ES9039Q2M chip to show this is the case and correctly identify the filters. Then, I will show that other SMSL DACs using ES9039 chips namely the D-6S, DO100 Pro and...