DT770 vs. ATH A900x vs D2000

Denon D200 on left, ATH A900x on right

Beyerdynamic DT770 250ohm

• More of a monitor style headphone, great for critical listening.  The sound is a little "dead" a recessed distant sound, easy to listen for multiple hours
• Love the fit, easy to wear for a long period
• Comes with travel bag

Audio Technica ATH A900x 42ohm

• More of a "fun" style sound quality
• I find the "wings" bothersome the headphone keep sliding down
• Very large and detailed sound stage
• Too heavy on the head
• Better isolation than D2000

Denon D2000

• Wonderfully made
• More musical than 900x
• Not as large a soundstage as 900x, but more musical and accurate
• A joy to use, so well made
• Left / Right separation, incredible, "outside the head" experience
• Reproduces lower bass than 900x
• Quieter than 900x

  Winner D2000, returned the 900x and going to sell the DT770 250ohm