NATUS TP-300 (Etymotic ER-2)
The TIP-300, also known as Etymotic ER-2, is a high-quality Tubephone Insert Earphone provided by MEGIN. It connects to the "Patient" socket on the gantry sidepanel.

Due to the high audio quality and fidelity of the sound received, this system is the preferred choice in most MEG studies.
However, the transducers do produce a significant magnetic field that can be detected by the MEG sensors.
It is important to securely fix the transducers at the back, or side, of the gantry chair, so they don't move during an acquisition session.
How to insert the foam eartips
It is reccommended to separate the red and blue tubing at the midle white connector, to allow easy insertion of the eartip into the participant's ear.
DO NOT throw away the white connector, when disposing of used eartips!