I have been wearing Phonak Marvel 70s for 7 months, fitted with large power domes by my audiologist. During this pandemic (and what else is there to do) I ordered other domes from Amazon as an experiment.
At the end of a long day, my ears are a bit sore from the large power domes. Also with the power domes, I feel a bit of occlusion - I feel I talk louder than what is necessary. Wearing large power domes reminds me of the days before hearing loss when I had to wear ear protection at work, and while talking I caught myself talking louder than normal.
Currently I am experimenting with Vented Medium Domes. I like the fit, I feel I can push the dome a bit deeper into my ear canal. I do hear a bit of different sound quality, perhaps more treble.
I’d like to hear from someone who has more advanced knowledge about the science of domes or from someone who has been wearing aids longer than I
My audiologist did say the power domes were best for my specific hearing loss, but there is no harm in continuing to learn/experiment.