If you get a chance to buy a SW3 I would definitely go for it. One of if my all time favourite ChiFi IEM. Had some amazing 3d holographic times with them
I didn't own the WM1A when I had a set of SW3 so cant help there. Its hard to say exactly how well they would pair - depends on what f/w you are using but they are a very good IEM
Sony I've found usually has a slightly V-shaped sound. Little bass boost, clear mids, elevated highs.
Pretty much describes the SW3 IMO. Should be a beautiful match.
As for the SW3 themselves, yes, they're pretty damn good. How much you looking at getting them used for?
Hi pal, I own both SW3 (mmcx no sibilances) and WM1A (CF MrWalkman) and I love the synergy (balanced out, double flange tips), everything what is said about this iems is improved by the dap. Big holographic soundstage, amazing bass (overall great resolution), you will habituate to listen to music out of your head all the time depending on the recordings you listen to. If you like this features I recommend them absolutely.
Is the bass bloaty or fast and accurate? Is USD80 for a used one (mmcx silver) a good price?