This is a custom IEM, the Vision Ears VE5. It has been modified to accept ear tips. I used to use it with AET07 and SednaEarfit Light ear tips. Sound output has been confirmed. This is a custom IEM, so returns are not accepted due to issues such as not fitting in the ear or incorrect size. Please consider this purchase with the understanding that it may need to be reshelled. Please refrain from purchasing if you are overly concerned about minor details. I am not considering a significant price reduction. I will ship within 24 hours. Thank you.