Jameco Reliapro ACU120100D0531 AC to AC Wall Adapter Transformer 12V @ 1000 mA Straight 2.5 mm Female Plug, Black - 100167 https://www.amazon.com/dp/B00B8861T2/ref=cm_sw_r_cp_apa_i_tTDrEbXEH35C8

Used this for my AI Synthesis PSU👍🏻

Someone posted this a few weeks ago. Perfect for bench testing - https://www.tindie.com/products/p0k3t0/basic-eurorack-power-supply-kit-or-assembled/

Bear in mind that it needs an AC to Aac PSU, not a Ac to DC. Something like this Jameco Reliapro ACU120100D0531 AC to AC Wall Adapter Transformer 12V @ 1000 mA Straight 2.5 mm Female Plug, Black https://www.amazon.com/dp/B00B8861T2/