Looking for a dac to use with a tablet then to musical paradise mp 301 tube amp. Tablet is Samsung tab S2, I use the headphone jack on the tube amp so not interested in it having a amp in it. Also want line in to run tablet to it with rca. Any suggestions? Also needs to be small footprint as my headphone setup is on my night stand so room is limited. Am I looking for unobtainable dac?