MIDI TRS Female (AUX 3.5mm) to MIDI TRS Male (AUX 3.5mm). Using with MIDI - Converts between MIDI TRS type A to MIDI TRS type B or from type B to A. Works in every direction. Using with audio - switch Left to Right audio streams for AUX 3.5mm headphones/cable/etc. Specifications: - 3.5mm AUX plug gold flash female to male. - 28AWG wiring 1Ω max.