low noise Pre-Amp / DAC power supply MJE15034 TL072 Regulator based on STUDER 900

Assembled the board.. having checked all the parts beforehand.. put 15 ohms in place of 75 ohms... turned it on... 22.4 volts at the output of the filter capacitors, 22.4 volts at the board output, not adjustable. Output LEDs light up, diodes near the filter capacitors do not light up, the BD140 transistor heats up, checked all the parts for correct soldering, everything seems to be correct.. where could I have made a mistake
 
Excellent DC power is always good for audiophile goals. Digital electronics are susceptible to ground plane noise, RFI and EMI. RPi is no exception. RPi like any PC or processor-based circuits, also generates processor noise, which audiophiles spend pains to mitigate. Common knowledge is that jitter even in picoseconds are discernable as hash or other undesirable dissonance. Such is the plight of the audiophile 🙂
 
Good health to all! My name is Vasily. I bought this board on Ali veriya 1.1 resistor 112 on it is marked on 75 ohm instead of 15 ohm as on other boards is this a typo or features of the version of this board? And another question instead of mje15034 what transistor can be put the board is needed to power the DAC. Thank you in advance for your answers..
Hello, That resistor is acually 7.5 ohms. I was wondering why it has been changed from 15ohms.