Project links
Here are some useful links related to the components, tools, and technologies used in the projects.
Availability and exact component variants may change over time, so always verify datasheets and full part numbers before use.
Note: similarly named components may not be compatible. For example, DAC IC AK4490EQ is not the same as AK4490REQ and is not pin-compatible.
DAC chips
- AKM AK4490REQ https://www.akm.com/global/en/products/audio/audio-dac/ak4490req/
- AKM AK4493SEQ https://www.akm.com/global/en/products/audio/audio-dac/ak4493seq/
- Cirrus Logic CS4398 https://www.cirrus.com/products/cs4398
- TI PCM1794 https://www.ti.com/product/PCM1794
- TI PCM1795 https://www.ti.com/product/PCM1795
- ESS ES9028Q2M https://www.esstech.com/wp-content/uploads/2022/09/ES9028Q2M-Datasheet-v0.41.pdf
- Philips TDA1387 multibit DAC https://www.alldatasheet.net/datasheet-pdf/pdf/19192/PHILIPS/TDA1387.html
- TI PCM5122 https://www.ti.com/product/PCM5122
Microcontrollers
- STM32F030F4 https://www.st.com/en/microcontrollers-microprocessors/stm32f030f4.html
- STM32F070F6 https://www.st.com/en/microcontrollers-microprocessors/stm32f070f6.html
- STM32F030C6 https://www.st.com/en/microcontrollers-microprocessors/stm32f030c6.html
- STM32G030K6 https://www.st.com/en/microcontrollers-microprocessors/stm32g030k6.html
USB to I2S interfaces
- Amanero Combo384 (recommended) https://amanero.com/site/combo384.html
- XMOS-based interfaces
- CT7601-based USB solutions
Operational amplifiers
- TI OPA1612 (preferred, SOIC-8) https://www.ti.com/product/OPA1612
- TI OPA1642 https://www.ti.com/product/OPA1642
- TI OPA1652 https://www.ti.com/product/OPA1652
- TI OPA1602 https://www.ti.com/product/OPA1602
- TI LM4562 / LME49720 (preferred, DIP-8) https://www.ti.com/product/LM4562
- TI NE5532 (classic solution) https://www.ti.com/product/NE5532
- Analog Devices AD827 https://www.analog.com/en/products/ad827.html
- JRC NJM2068D https://www.alldatasheet.com/datasheet-pdf/pdf/512048/NJRC/NJM2068D.html
The choice of op-amp is flexible and can influence the final sound character. Both SOIC-8 and DIP-8 formats are supported depending on the board version.
Output stage components
- BC547 (or similar npn type) https://www.alldatasheet.com/datasheet-pdf/pdf/11551/ONSEMI/BC547.html
- 2SK170 / 2SK117 https://www.alldatasheet.pl/datasheet-pdf/pdf/213179/TOSHIBA/2SK170.html
- 2SK30 / 2SK246 (180deg pinouts to PCB-silk) https://www.alldatasheet.pl/datasheet-pdf/pdf/30636/TOSHIBA/2SK246.html
Power supply
- TI TPS7A20 series https://www.ti.com/product/TPS7A20/part-details/TPS7A2050PDBVR
Published on 7 May, 2026