Adapter: 6.35 mm TRS → 3.5 mm TRS

Reverse-direction screw-on adapter: 6.35 mm TRS male to 3.5 mm TRS female. Same pass-through wiring as the 3.5 → 6.35 mm version but used in the opposite direction — typically for legacy 6.35 mm-terminated headphones running into a portable source.

Less common than the forward direction since portable sources have largely moved to 4.4 mm balanced and modern dongles are 3.5 mm SE. Still useful for old studio-monitor headphones with permanent 6.35 mm plugs.

Compare with the much more common 3.5 mm → 6.35 mm adapter.