HiFi DAC Module for uConsole

uConsole
1

I’m planning to design a DAC+ADC module for uConsole with an expected THD+N (output) of around -120dB. Would people find this specification acceptable for $75?

Features

  1. Retains the built-in speaker function.

  2. Supports 32-bit depth and 384kHz sampling rate.

    • Currently, software only supports PCM playback, though hardware is capable of DSD playback.
    • MQA format is not considered due to low usage and official discontinuation.

  3. 400mW output (balanced headphones), 200mW output (single-ended).

  4. Dual headphone jacks: 3.5mm and 4.4mm.

  5. Physical switch for output power selection: 25% and 100% volume, adaptable to different headphones.

    • LED indicator lights up when playing; blue LED for 25% volume, orange LED for 100% volume.

  6. 3.5mm Line-In Jack

Chips

  1. DAC
    • ESS ES9039Q2M
  2. OPA
    • OPA1612 *4
  3. ADC
    • CS5340
8 Likes
2

Feel free to share any thoughts or suggestions!

1 Like
3

I would love if it had 1/4" in.

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4

I have considered using a 6.35mm connector, but it seems that the side of the uConsole doesn’t have enough space for such a large connector. Additionally, my input design is purely line-level, so this requirement can probably only be met by using a 6.35mm-to-3.5mm cable to connect to a device with a built-in preamp.

2 Likes
5

For example, Walkman.

6

Balance in and our may be an option then. There are adapters from there.

1 Like
7

I have considered and support balanced audio output; however, balanced input support may be limited by size constraints, making it difficult to implement.