Micro Ripple Eater aka MRE PCB

The MRE can supply up to 10A from each power supply rail of up to +-50V with suitable heatsinking.  It suppresses LF ripple by 40 dB and HF ripple by more than 50 dB and makes a perfect complement to any high performance DIY amplifier. It can be used with higher supply rails, provided the capacitor voltages are increased.  Here are the full construction details and BOM.