USB-C

More and more manufacturers of mobile phones drop the 3.5 headphone jack.
Indeed, without this jack it is easier to make the mobile waterproof.
Another trend is replacing the micro USB connector with a USB-C connector.

Today you can get dongles with USB-C in and 3.5 analog out.

This means there is a DAC build-in.

But is this DAC used?

The 24 pins USB-C allows for analog audio as well.

The device must set the bus in Alternate mode to obtain this.

Obvious, USB-C is the most analog sounding digital bus!

 

However this will bypass the DAC of the adapter.

It is pretty unclear when this happens and how to force or prevent this.

 

Cubilux US$69.98

Added 2019

Dense Adapt Audio DAC $59.99 (standard version)

Meaurements on

Added 2019

Earmen Donald DAC $99

 

Donald Dac

PCM 384kHz/32bit,

DXD, MQA Rendering

DAC:    32 bit Cirrus Logic CS 43198

USB:    XMos  2XX

Input:     USB-C - DATA/Power Supply

              USB-C - External Power Supply

Output:  RCA

Dimensions: L * H * W (mm) 114 x 80 x59

Meaurements on

 

Added 2020

iBasso DC01 ‎€49.00

Added 2019

Musiland MU1 US $38.50

Musiland MU1

Supports 16 or 24Bit, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz full sample rate audio format playback.
Headphone output power up to 2x60mw/32 ohms, can drive up to 120 ohms headphones, output up to 300mA transient current.
Intelligent suitable for output impedance, support line output whose impedance above 600ohms; output level IV RMS

Added 2019

Zorloo Ztella

 

Zorloo Ztella

ESS Sabre DAC technology

SNR @ 120dB

THD+N @ 0.0006%

< 2 ohm output impedance ​

PCM sampling frequency up to 384kHz

DSD sampling frequency up to 5.6MHz

Added 2019

References

  1. 3.5mm audio vs USB Type-C: the good, bad and the future - Robert Triggs
  2. USB-IF Publishes Audio over USB Type-C Specifications - Anton Shilov 2016
  3. Headphone dongles - ASR
  4. Apple vs Google USB-C Headphone Adapters -