Here some excerpts from the test by Rainer Wind from Bonedo.

• "It delivers a detailed, full sound and due to the tube preamp it provides a bit more warmth than an amp of the regular Little Mark series. If you increase the gain level, the sound becomes richer without reducing the transparency." 
• "Markbass is known for listening and responding to the wishes of its customers - the LMV D2 is a result of this."
• "In terms of sound flexibility, however, the second version (D2) is a step ahead of the previous Little Mark Vintage."

>>> FULL REVIEW (in German)

Here the SOUND TEST: