Other additions to the Tone2 Pro include a 4.4mm balanced headphone jack in addition to the standard 3.5mm single-end jack. As Khadas explains, 'the OPA1612 was selected because it provides superior audio quality and excellent distortion characteristics THD + noise is below 0.00008% throughout the audio range (20Hz to 20kHz).' This 3-stage amplification pathway enables Tone2 Pro to drive a wide-range of demanding audiophile-grade headphones with impedances of up to 150 ohms. For this project, Khadas paired an ESS ES9038Q2M DAC with four TI OPA1612 operational amplifiers, and three buffer amplifiers.

Using its own software and hardware development capabilities, the company achieved what few industrial company's from China have managed: to build a brand and a strong user community out of the Khadas business.Īfter months of consultation, tons of feedback from the market, and a lot of teasing online communities, Khadas is now accepting orders for the Tone2 Pro - the second generation Tone Board following the Tone1. In addition to OEM and ODM solutions, Wesion develops, manufactures and markets Amlogic and Rockchip single board computers (SBCs) for the open source community and streaming media player industry. Ltd.) founded in 2014 in Shenzen, China, is the company that owns the brand Khadas.

Khadas tone2 pro