Default version is based on SUTs (1:8). i/v resistor across the primary coil is 150R, loading resistors are 100k (secondary coil side). Output impedance is 8.5kohm - for direct working on to high impedanced/low capacitance next stage with input impedance of 50kOhms and more. Output level using DM ES9038Q2M DAC on 50k load is ~2.5V for BAL (XLR) and 1.2V for SE (RCA).
*Active output (50R output impedance) is possible using active/passive PCB version with matched jfet transistors pairs (k170/j74). Parts for active output are not included. **The final technical parameters of transformers and parts can be changed according to requirements.