As both the DAC-10 and the LM-502 are both based on the same family of ESS chipsets they are more similar than different other than the fact that one's output stage is SS and the other is tube. Both DAC's portray the soundstage in my room wall to wall. With the LM the depth is several rows back in the audience than the DAC-10, though both portray depth to the "back of the stage." Detail retrieval goes to the DAC-10 as is the case with most comparisons between SS and tubes. I have used it as a "linestage" only insofar as running the Vista Phono into the analog inputs for the TT. For the first month I ran it as a DAC/Pre. Then after that I ran it as a DAC only using a W4S STP-SE, Sonic Frontier Line 2 SE+ and the Modwright LS-100 as preamps. I prefer to use a separate preamp, but many others prefer to use DAC/Preamps straight into the power amps so you mileage may vary depending on which option you prefer.