Drop one to three .nam captures in the bays, set the mix with the knobs, press WELD. Hear each amp, the blend and the welded result, play live through it, then save a .nam or an HX Stomp .wav. REFINE re-trains the Lite inside an A2 file against its own Full model (stock Lites miss the Full by 1–5%; a few minutes gets to about 0.5%) and saves <name> HD.nam + .wav. Everything runs in your browser — nothing is uploaded.