A number of months ago I started using some tube MA-1's I haven;t fired up in years and connected my variable out phono pre directly balanced, so I had Only 1 source- Vinyl. Cut to several months later, I get a pre amp and can now listen to digital as well Via USB laptop/itunes, which is very convenient. Played digital a few times, but now I find I am gravitating back to LP almost exclusivley, even with good digital playback available.