Seeing the title of your post I immediately thought of the Synthesis A40 like @Larryi above. I had the A40 powering a pair of Audio Note speakers whose specs are not far off from the Devores you are currently powering and it made them sing. The internal DAC in the A40 is outstanding and you may find it an upgrade from Venus II with the right cable. I regret selling the A40, I upgraded to the Synthesis 98 DC mono blocks, as I will be purchasing another for my family room system.
John