Review on Enhance Your Audio Experience with SIMOLIO 2 Channels IR Audio Transmitter by Francisco Duncan

Works great with Planet Audio PHP22 headphones. There seems to be a limit to both vertical and horizontal angles. This restricts the listener's movement. I didn't expect it to have an RF range. The sound is very good (at least to my old ears). The headphone volume control is very practical. At first I was very surprised that this setting also worked when my back was turned to the transmitter. Of course, any solid obstacle will cause it to stop working.