So, I'm a bit of a beginner when it comes to this. I have been looking into headphones and amps the last week and I think I've settled on getting the Sennheiser HD598 in combination with either NuForce uDAC 2 or Audioengine d1. The problem is that I am also planning on purchasing a vinyl rig in the foreseeable future and I don't know if it's possible to use the amp in the DAC in combination with a budget RIAA like Vincent PHO-111. The DACs have no RCA-inputs so I don't know how I would connect the RIAA and vinyl player with them in that case.
Any other input on my setup is also appreciated. Maybe there are some budget solutions with a combined DAC/RIAA? Is it easier to go with a separate DAC?