The Objective DAC and Objective 2 headphone amplifier circuits are designed for the most accurate audio reproduction possible. It retails for USD $99. JDS Labs have hidden a little extra feature into this and the OL DAC, that is solder pads for a DIP switch so you can change the DAC’s filter.

A standalone DAC design also allowed JDS Labs to better implement its USB and Optical inputs—a move aimed at appeasing customer demand for support for games consoles, CD/DVD players and other devices.
It is 90% smoke and mirrors. I have used many headphones, including my HD800's, with the O2 and been extremely pleased with the overall sound quality. Sound: Let’s keep this fairly concise, this device is in my opinion a no brainer for your system.
This is a review and detailed measurements of JDS Labs Atom Headphone Amplifier. I used to be a high-end audio salesman, so I know how things are done in the audio industry.

It was kindly sent on loan by JDS Labs in advance of its formal announcement and availability this week. This version from JDS Labs combines both units into one sturdy, compact package. As such, I will be comparing its performance to other $99 amplifiers such as Schiit Magni 3 and Monoprice Liquid Spark. And, so, the OL DAC was brought to market. It is 90% smoke and mirrors. Need help deciding between the Schiit Heresy and JDS Labs Atom: Headphone Amplifiers: 21: Apr 8, 2020: M: Upgrading my JDS Labs Element: Digital Audio Converters (DACs) 4: Jan 14, 2020: C: JDS Labs Element II: Combination Audio DAC and Headphone Amplifiers: 18: Nov 18, 2019 It's fully plug-and-play up to 24-bit 96kHz without the installation of any additional drivers. I have used many headphones, including my HD800's, with the O2 and been extremely pleased with the overall sound quality. The JDS Labs Objective 2 is a solid state headphone amp; it has no tubes, which color and distort music. The JDS Labs Objective 2 is a solid state headphone amp; it has no tubes, which color and distort music. I used to be a high-end audio salesman, so I know how things are done in the audio industry.