Series DC Choke for Power Amp PSU (Inductive Filter)

Hi All,

I'm a little bit confused about the use of a DC Choke in series on unregulated power Supply to increase the ripple performance on a solid state power amplifier.
Usually the series DC Choke are common for Tube Amp but not in SS, i'm just finishing my power amp power supply that use 8*51000uF Cap Bank, trafo is 0.8kVA and dc out is +/- 45V, the power amplifire is able to deliver 200W on output.
What kind of choke can be used in my case to improve the PSU performance?
When switch off the Main Voltage, can be in some way the circuit affected from flyback effect from DC Choke?
Someone have experience with this kind of circuit?

Thank you in advance