Aikido LV Regulator Kit - Choosing the Right Xformer

[HiGHFLYiN9s]

I recently picked up a gently used Wadia 171i Transport and wanted to build a 9V power supply for it, as the existing wallwart is a noisy one. I selected the Aikido LV Regulator Kit because it can be configured for a 9V output.


LV-Regulator

As stated on the site "The new board is bigger than the H-PS-1 and no longer can accept the voltage-doubler rectifier configuration. But the PCB accepts two possible rectifier configurations (full-wave bridge and full-wave center-tapped). In other words, this regulator can deliver +5Vdc or +9Vdc from two different power transformer secondary voltages; for example, for 9V output either a 10Vac or 20Vac center-tapped transformer secondary; or 5Vdc from either a 6.3Vac to 9Vac or a 12Vac to 18Vac center-tap secondary."

Could anyone recommend a particular transformer from Mouser / Digikey / Edcor or other U.S. supplier for this purpose?

TIA!