S BOOSTER powersupply for dacs? No audible difference !dennis2021-05-08T16:22:22+01:00
1. Topping D50 USB powered vs Sbooster BOTW.
Identical performance at 0-20kHz. Better performance above 20kHz, but that doesn’t matter because worst case scenario is at -125dB and it’s outside of audible range. Conclusion: No audible difference between USB powered vs Sbooster BOTW.
The power supply noise spectrum shows a measured difference between the units, but that is of no concern, because
No audible difference between Wyrd4sound (linear) vs Sbooster (linear) vs Topping DX3 Pro supply (switching).
3. Topping E30 USB powered vs smartphone charger.
No audible difference between: Linear, switching, smartphone charger and USB.