Inventis Viola ultimate hardware technology
Inventis Viola screening tympanometer and diagnostic audiometer
Inventis Viola small footprint
Inventis Viola high resolution, color LCD display


Viola is a combo unit that integrates a screening middle ear analyzer offering ultrafast and reliable tympanometry and reflex tests with a diagnostic audiometer capable of performing threshold and speech examinations in AC and BC.


Viola has a very small footprint, just 2 kg of weight that allows to carry the entire diagnostic station in a small suitcase. Viola is available in two models: Basic and Plus. The following table is an overview of the tests available on each version.


Automatic tympanometry

Yes Yes
Automatic acoustic reflex thresholds Yes
Reflex test with fixed intensity Yes
Reflex test with increasing intensity Yes

Quick tests (tymp. + reflex tests)

(2 tests)
(2 tests)
Acustic reflex decay No Yes

Pure tone audiometry

Yes Yes

Speech audiometry

No Yes



No more external player headaches! Viola Plus features an integrated flash memory for storing your speech material. The screen displays the word currently being pronounced.

Inventis Viola 2 different models
Combo unit that integrates a screening tympanometer with a diagnostic audiometer.
Suitable For All Needs
2 different models
Choose the model that best fits your needs.
Easy Data Management
No drivers needed, transfer directly your exam results into your Maestro database.

Available tests

Tympanometry (automatic) 
Acoustic Reflex Threshold (automatic) 
2 Automatic test sequences (tympanometry + reflex test)
Pure Tone Audiometry 

Only Viola Plus
Acoustic Reflex Decay
Speech Audiometry 
QuickSIN® test (optional) 

Probe tone 226 Hz @ 85 dB SPL
Compl. range 0.2 ÷ 8.0 ml (@ 226 Hz)
Pressure system Rotary type pump with endless flow
Pressure range From -600 to +400 daPa
Safety limits -800 daPa and +600 daPa
Press. change 50, 100, 200, 300 daPa/sec, AUTO (100 - 300 daPa/sec)
Type of test Automatic tympanometry
Acoustic reflex test  
Stimulation Ipsi and contralateral
Available tests Automatic threshold, Fixed intensity, Growing intensity
Acoustic reflex decay (Viola Plus only)  
Stimulation Ipsi and contralateral
Test duration 10 sec or 20 sec (selectable)
Quick tests  
Automatic tests Quick A and B (seq. of tympanometry and reflex)
Stimulus Pure tone, warble tone
Plus only: EXT1, EXT2, MIC, internal flash memory
Masking NBN, WN, SN (only Plus)
Output AC, BC and Speech (only Plus)
Freq. range 125-8000 Hz
Max. intensity AC: 120 dB HL
BC: 80 dB HL
Talk over Built-in or external microphone
Talk back (only Plus model)  Built-in speaker or monitor headset (included); patient microphone included
Device specifications  
Display Type: Graphical color TFT LCD
Size: diagonal 4.3”, 95 mm x 54 mm
Resolution: 480 x 272
Printer Built-in thermal printer (opt.)
Language Multilingual interface
PC interface USB (driverless)
Compatible sw Inventis Maestro or Noah with dedicated module

Without integrated printer: 32 x 32 x 9 cm / 12.6 x 12.6 x 3.5 in (WxDxH)
With integrated printer: 32 x 39 x 9 cm / 12.6 x 15.4 x 3.5 in (WxDxH)

Weight Without integrated printer: 1,9 kg
With integrated printer: 2,4 kg