You can create your own PGN files using software like ChessBase or Fritz by manually entering moves and saving the result. 2. Neural Amp Modeler (NAM) Files
If you are looking to download chess games, is the standard format for recording moves and metadata. How to Download: Download ampg pgn
Open a game, navigate to the Analysis Board , and click the FEN & PGN tab at the bottom to download. You can create your own PGN files using
Open a game, click the Share icon in the Analysis tab, select the PGN tab, and click Download . How to Download: Open a game, navigate to
If "ampg" refers to guitar amplifiers, you might be looking for files used with the Neural Amp Modeler . These are digital "clones" of real-world guitar amps and pedals. How to Create / Edit PGN files (CHESS)