Wondering whether the D2 can be used with Mullard M8161 Tube? Thank you.

Hi guys,     I just bought a D2 for a few days.  My D2 is running with Magnet SA-01 Integrated Amplifier and Wharfedale EVO2-8 Speakers.  The sound is good and lovely to my taste for audiophile songs that I enjoy.  I use Foobar2000 and JRiver MC18 as a transport via WASAPI (PUSH) driver...