Magic Trashman has written a tutorial on how to padhack a Neo Geo Mini controller to DB15 (arcade/Neo Geo direct connection) and add a clicky microswitch d-pad to it. It’s a relatively complex mod involving custom 3D prints, but MT has been offering pre-modified controllers for sale through Twitter.
I bought one of these from MT’s first batch and I was surprised at how solid the new controllers are. I own several of the original Neo Geo controllers and the new modified one by MT is actually my preference.
Photo Tutorial: https://imgur.com/a/ilmSDPK
NEOGEO mini PAD(Black)
(1147)Impressive analog stick with all dimensions positioning that provides super accuracy Start and Select function buttons A, B, C, D buttons with classic design
(as of March 27, 2023 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
NEOGEO Mini Console Official Control Pad: White (NEOGEO Mini)
(864)Enjoy multiplayer action on your NEOGEO mini with these classic control pads designed specifically with NEOGEO games in mind Classic recreation of the much loved NEOGEO CD controller Features an identical button layout to the integrated console unit ... read more
(as of March 27, 2023 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)