A review of the JDS Labs O2+ODAC combo has been published, examining the combination of the Objective2 headphone amp and ObjectiveDAC. The review is one of several recent articles about audio equipment, including portable DACs and headphone amplifiers from various manufacturers. It is unclear if the JDS Labs O2+ODAC combo is being compared to other devices, such as the Creative Sound Blaster E5 or Encore mDAC, in the review.