![Packshot_Virto_M_ITC_312_DIR_pair_F06_S06_PB_450x450pix.png Packshot_Virto_M_ITC_312_DIR_pair_F06_S06_PB_450x450pix.png](/content/phonakpro/il/en/support/product-support/hearing-aids/virto-marvel/overview-virto-marvel/_jcr_content/main-content/columns/par-column-1/image_9270.image.0.0.png/1579517424237.png)
Overview
![Packshot_Virto_M_ITC_312_DIR_pair_F06_S06_PB_450x450pix.png Packshot_Virto_M_ITC_312_DIR_pair_F06_S06_PB_450x450pix.png](/content/phonakpro/il/en/support/product-support/hearing-aids/virto-marvel/overview-virto-marvel/_jcr_content/main-content/columns/par-column-1/image_9270.image.0.0.png/1579517424237.png)
![Packshot Virto B-Titanium Packshot Virto B-Titanium](/content/phonakpro/il/en/support/product-support/hearing-aids/virto-marvel/overview-virto-marvel/_jcr_content/main-content/columns/par-column-1/image_680c.image.0.0.png/1579517424286.png)
User guides
![](/content/dam/phonakpro/system_images/components/asset-item/miniatures-user-guide.png)
User Guide: Phonak Virto M-312/312 NW O/Titanium/10 NW O
How To's
![](/content/dam/phonakpro/system_images/components/asset-item/miniatures-video.png)
Video: How to take ear impressions
FAQs
What is Biometric Calibration?
Beginning with the extraction of 1600 data points from the client’s ear impression, the directional response of the hearing aid is designed to take into account the effect the client’s ear anatomy has on incoming sound waves. The result is a custom calibrated and more precise beamformer, providing up to 2dB better directionality for directional models.