Aliexpress sells the Audio Network Transmission Interface A404 module, which supports the DANTE data transfer protocol.
The A404 module can be connected to the 3-Way DSP Amp using the adapter I assembled.
This solution, using Dante software, allows you to transmit two stereo channels to the 3-Way DSP Amp via the Ethernet.
The price of the 3Way DSP Amp + adapter board without the DT AES67 module is $105.
Attached to the post is an archive of a folder with files for the starter project for Sigma Studio.
The A404 module can be connected to the 3-Way DSP Amp using the adapter I assembled.
This solution, using Dante software, allows you to transmit two stereo channels to the 3-Way DSP Amp via the Ethernet.
The price of the 3Way DSP Amp + adapter board without the DT AES67 module is $105.
Attached to the post is an archive of a folder with files for the starter project for Sigma Studio.
Structural diagram.
Performance parameter PWM DAC:
Performance parameter PWM DAC:
- Output power: 100 W per channel, with a 32 V supply and R load = 4 Ohms.
- Speaker impedance: 4 - 8 Ohm (2Ohm – max 50W)
- Frequency response: 20Hz - 20kHz
- THD: less than 0.005% on 8Ohm load, and less than 0.01% on 4Ohm load
- SNR: 107dB(A)
- Spdif Input : 16-32bit 44.1-96kHz
- Spdif Output : 16-32bit 44.1-96kHz
- I2S Input : 16-32bit 44.1-192kHz
- Power supply: DC 12V - 32V/ 5A-10A
- Consumption power: Idle mode 10W, sleeping mode 2W
- Efficiency - 80%
More details about the capabilities of the 3-Way DSP Amp board can be found here.
https://www.diyaudio.com/community/threads/3-way-dsp-amp.415065/
The A404 module offers advanced flexibility in networked audio systems by enabling not only audio reception via Ethernet, but also bi-directional audio streaming—transmitting two stereo channels back into the network.
At the heart of the system, the ADAU1452 DSP seamlessly interfaces with the A404 via I²S, both receiving and sending two stereo audio streams. Thanks to its integrated ASRC (Asynchronous Sample Rate Converter), clock synchronization is fully handled by the A404 module, ensuring robust and jitter-free communication.
Moreover, the ADAU1452 allows flexible audio routing: SPDIF input can be sent over Ethernet, or audio from Ethernet can be output via SPDIF—perfect for hybrid setups.
One key design detail: the A404 module continuously provides an active I²S BCLK signal, which keeps the clock detector engaged at all times. For this reason, automatic input switching between SPDIF and Ethernet is not supported. Instead, input selection must be defined within the SigmaStudio project.
However, I recommend keeping the input selector block in your SigmaStudio design, as it helps prevent power-on artifacts such as clicks—caused by the different startup timings of the A404 and ADAU1452 modules.
https://www.diyaudio.com/community/threads/3-way-dsp-amp.415065/
The A404 module offers advanced flexibility in networked audio systems by enabling not only audio reception via Ethernet, but also bi-directional audio streaming—transmitting two stereo channels back into the network.
At the heart of the system, the ADAU1452 DSP seamlessly interfaces with the A404 via I²S, both receiving and sending two stereo audio streams. Thanks to its integrated ASRC (Asynchronous Sample Rate Converter), clock synchronization is fully handled by the A404 module, ensuring robust and jitter-free communication.
Moreover, the ADAU1452 allows flexible audio routing: SPDIF input can be sent over Ethernet, or audio from Ethernet can be output via SPDIF—perfect for hybrid setups.
One key design detail: the A404 module continuously provides an active I²S BCLK signal, which keeps the clock detector engaged at all times. For this reason, automatic input switching between SPDIF and Ethernet is not supported. Instead, input selection must be defined within the SigmaStudio project.
However, I recommend keeping the input selector block in your SigmaStudio design, as it helps prevent power-on artifacts such as clicks—caused by the different startup timings of the A404 and ADAU1452 modules.
