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Small red desktop DAC and headphone amplifier with 3.5mm and 4.4mm outputs

Khadas

Khadas Tone2 Pro DAC Headphone Amplifier Red

SKU CH-T680-D1EVW

Desktop DAC and headphone amplifier with ESS ES9038Q2M and four OPA1612 op-amps, 32-bit 768 kHz and DSD512 support, hardware MQA decoding via XMOS XU216.

  • ESS ES9038Q2M DAC with four OPA1612 op-amps for transparent sound
  • 32-bit 768 kHz PCM and DSD512 bit-perfect playback supported
  • Hardware MQA decoding via XMOS XU216 for authenticated master quality
  • 5 mm unbalanced and 4.4 mm balanced headphone outputs included
  • Second USB-C (I2S) port accepts 5 V linear supply for cleaner noise floor

Desktop DAC and headphone amplifier

The Khadas Tone2 Pro combines an ESS ES9038Q2M DAC with four OPA1612 operational amplifiers and three buffer stages. It accepts USB-C and USB-C I2S inputs and provides 3.5mm unbalanced, 4.4mm balanced, and balanced RCA outputs. This unit suits listeners who want a compact desktop device for high-resolution playback and headphone driving.

Thermal noise and power characteristics

The device operates from a 5V supply with a minimum of 3V and uses an XMOS XU216 processor for MQA decoding. A second USB-C I2S port allows connection to an external linear power supply for cleaner signal-to-noise performance. The design targets -118dB THD+N at line-out with no active cooling required.

Decoding capability that decides fit

Hardware MQA decoding supports up to 32bit 768KHz PCM and bit-perfect DSD512 playback. Buyers who need streaming support beyond MQA or who require additional digital inputs such as optical or coaxial will not find them here.

Highlights

  • ESS ES9038Q2M DAC with four OPA1612 op-amps for transparent sound
  • 32-bit 768 kHz PCM and DSD512 bit-perfect playback supported
  • Hardware MQA decoding via XMOS XU216 for authenticated master quality
  • 5 mm unbalanced and 4.4 mm balanced headphone outputs included
  • Second USB-C (I2S) port accepts 5 V linear supply for cleaner noise floor

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the Tone2 Pro to my computer and what driver step is often missed?

Connect the USB-C port to your computer and install the Khadas USB driver for ASIO support and bit-perfect playback on Windows.

What consumable parts will the Tone2 Pro need over time?

The unit has no user-replaceable consumables; the ESS ES9038Q2M DAC and four OPA1612 op-amps are soldered and rated for continuous operation.

At what sample rate does the XMOS XU216 processor limit MQA decoding?

The XMOS XU216 handles full MQA unfolding up to 32-bit 768 kHz PCM and DSD512 without downsampling.

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