duo Scan

The duo Scan is a 3D scanner for digitizing ear impressions and was designed for daily use in doctors’ offices, shops and production. The compact, powerful scanner can be added seamlessly to any workstation. Its unobtrusive design and the pleasant operating sound level are an advantage when set up inside the shop.

The short scanning time ensures a high daily throughput.

Our audiology products free Stage one, mono Scan, free Stage twin, duo Scan and ds Production are 3D scanners for the digitization of ear impressions, precisely tailored to your specific needs. As a HIMSA member company, smart optics equips all scanners with a Noah interface as a matter of course, allowing the scanners’ software to be integrated into your Noah system.

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Field is required!



duo Scan
Size (W x L x H)300 x 340 x 135 mm
Weight8 kg
ConnectionsUSB 3.0
Power supply100 - 240 VAC, 50/60 Hz
HousingPUR integral rigid foam
On/Off switchPressure switch, green LED, front
Warranty36 months
Extended warranty 12 months
duo Scan
Accuracy (acc. ISO 12836)< 9 µm
Scan time (*)18 seconds
Number of impressions simultaneously2
Measuring technologyStripe light triangulation
Light sourceWhite light LED
Resolution of scan qualityadjustable
Output data formatPLY, STL, ASCII, MSH
* Depending on the PC configuration, an additional 3-10 seconds are required for the matching.
duo Scan
Capacitive touch sensor
Status LED
Open scanning
Color texture scan
Quick start function
Annotating and commenting
Various naming methods
Barcode naming (*)
3D calibration (*)
Project export incl. FTP upload (**)
* Accessories needed.
** When using aural Scan 3.2 or earlier, FTP upload is a paid module.
duo Scan
Scan softwareaural Scan
System requirements (Minimum)Windows 10 64-Bit
Dual Core CPU, i3
USB 3.0 Port
approx. 40 GB free hard-disk space
Graphics card with 1 GB RAM
System requirements (Recommended)Windows 11 64-Bit
Quad Core CPU, i5
USB 3.0 Port
approx. 80 GB free hard-disk space
Graphics card with 2 GB RAM
Compatibility with Noah System
Compatibility with winIPRO
duo Scan
Shipping box includesduo Scan
2× object holders
Power cable
USB 3.0 cable
Scan software with calibration data


All downloads for the duo Scan such as manuals and catalogs or the current version of aural Scan can be found in our Download center.