I’ve used these to step down the voltage of mytek Brooklyn DAC+ :
Jensen JT-6110K-B
https://www.jensen-transformers.com/wp-content/uploads/2014/08/JT-6110K-B-Data-Sheet.pdf
Jensen JT-6110K-B
https://www.jensen-transformers.com/wp-content/uploads/2014/08/JT-6110K-B-Data-Sheet.pdf