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For professionals

Phonak Virto™ Marvel

Virto Marvel M 10 NM O

Phonak Virto B 10 Omni hearing aid
Fitting guides

Virto Marvel M 312 NW O

Phonak Virto M 312 Omni hearing aid
Fitting guides

Virto Marvel M 312

Phonak Virto M 312 hearing aid
Fitting guides

Virto Marvel Titanium

Phonak Virto M Titanium hearing aid
Fitting guides

Model of Acoustically Optimized Vent.

Acoustically Optimized Vent (AOV)

Phonak’s proprietary AOV, is an algorithm which takes into account the unique characteristics of each client. AOV considers the unique characteristics of each client, including the audiometric configuration, risk of feedback, likelihood of occlusion, benefit of direct sound, and the need for low-frequency gain. The proprietary formula then creates an individualized vent size specifically for each client.

What is AOV?

  • AOV is designed to give clients the ideal combination of acoustic performance and wearing comfort based on their unique hearing loss and hearing aid configuration based on the ear anatomy.
  • Selecting AOV eliminates the need to manually select the correct vent size for each client. This can result in a smaller and more discreet hearing aid
  • HCPs benefit from selecting AOV. A review of internal data shows that hearing aids with AOV are returned less often than those with a manually-selected vent.1

How do I use it?

  • AOV is the default vent selected for all custom hearing aids and earpieces ordered from Phonak. This means you only have to select AOV on the order form to get the benefits of an individualized vent for your client.
Model of Acoustically Optimized Vent.

Titanium FitGuide for Virto M-Titanium

Thanks to the new Titanium FitGuide, over 50% of people get an even more discreet fitting Virto M-Titanium by an average of 2.5 mm. That is the difference between discreet and super discreet.

We are taking super discreet to the next level

The Titanium Fitguide indicates how deep the hearing aid can be placed in the ear.

How does it work?

Ear impressions are static but ear canals are flexible. The new Titanium FitGuide takes this flexibility into account and defines how deep the hearing aid can be placed in the ear canal.


Partner with us

As a Phonak partner, you’ll get access to one of the industry-leading hearing solutions, our extensive resource library, marketing support to help your business grow, community events, training, and more.

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1 Leuthold, N. (2019). Internal Phonak report. Please contact if you are interested in further information.