FILAMENT POWER SUPPLY: RECTIFIER BY MOSFET OR SIC ?

[TasoTaso]

hi, I'm making a stabilized power supply for tube filaments, it's a line + phono preamp.
I'm undecided whether to rectify with a mosfet bridge (lt4320 + mosfet in attached photo) or use 4 sic to220 diodes.
Which solution is less noisy? After the bridge and cap there is a lm350k or lm338k.
Thanks

 

[euro21]

If it's for indirect heated tubes, IMO both version is unnecessary.
Use simple stabilised supply, even -lower noise- three terminal regulator.