Beyerdynamic DT-990-PRO-250 Studio Monitor Headphones+DAC Headphone Amplifier - Rockville Audio
I've had the Beyerdynamic DT990 Pro for a week now, along with the Schiit Fulla 2. : r/headphones
Top Desktop DAC/Amps Jaben Online
Sound Blaster E1 Portable DAC/Amp Review: “A Great Cheap Audio Device!” | by Alex Rowe | Medium
OFFLINE beyerdynamic DT990 Headphones 250, Ohm with M-Audio Pro DAC at Gear4music
Got DT 880 250 ohm and can confirm the fact that portable DAC can't drive them at all :) : r/headphones
Beyerdynamic DT 1990 PRO 250 Ohm Open Studio Headphones, Tesla Studio Reference Headphones for Mixing and Mastering with with FiiO K3S (New K3) DAC Amp | Music Bliss Malaysia
Ifi ZEN Dac V2 with DT990 Pro (250 Ohm) - Headphone Discussion / Help - HifiGuides Forums
Got DT 880 250 ohm and can confirm the fact that portable DAC can't drive them at all :) : r/headphones