PC-based diagnostic


Cello and Maestro Control Panel
Cello diagnostic PC-based audiometer
Inventis Cello bone and speech audiometry exams
Hang Cello on the wall as a little masterpiece
PC-based diagnostic


Cello is a computer-controlled diagnostic audiometer, capable of performing fast and accurate air, bone and speech audiometry exams, as well as several additional tests including QuickSIN™, HF audiometry and VRA and CPA tests with video or toys reinforces. Cello is ideal for anyone unwilling to compromise on comfort and user experience. 


Besides the standard audiometry exams, Cello also performs Hughson-Westlake automated audiometry, high-frequency pure tone exam, speech audiometry, QuickSIN®, SISI, Stenger and includes a 2 channel Master Hearing Aid.


Cello audiometer provides a flexible solution for conducting hearing exams with children, harnessing the benefits of both Visual Reinforcement Audiometry (VRA) and Conditioned Play Audiometry (CPA). 
Our new Cello elevates the field of pediatric audiology by not only providing the conventional three LCD displays for showcasing images and animations from Maestro software, but also by enabling the integration of up to three animated toys directly connected to the device's rear panel and controlled through Maestro. This addition ensures that a child's focus and cooperation are maximized during the examinations, thereby enhancing the engagement and effectiveness of the process.


When dealing with uncooperative young patients, having a second operator becomes invaluable. The assistant monitor acts as a bridge, facilitating seamless communication between operators: it both allows the second operator to hear the stimulus sent to the patient and enables the dialogue with the main operator who is conducting the examination.


Connect Cello to the USB port of your Windows® computer and you are ready to go: no driver and no additional cable required. You can control Cello through the Maestro’s amazingly user-friendly interface, available also for Noah.


The synergy of Cello and the Maestro Control Panel can significantly enhance your audiology practice. 
The Maestro Control Panel optimizes the Maestro software's capabilities, particularly during audiometric tests.
Simply connect Cello and the Maestro Control Panel to your computer via USB; enabling you to effortlessly manage Maestro software during VRA and CPA exams. Dedicated buttons allow you to choose toys and oversee the assistant monitor seamlessly.

Optional VRA extension license and package

  • 10562: Pediatric audiometry (VRA) extension package for Cello. Includes the license code, the desktop switch and the assistant monitor headphones. 
  • 12259: Pediatric audiometry (VRA) license for Cello. 
Cello diagnostic audiometer for pediatric audiology
Advanced testing
High-frequency audiometry
Pure tone audiometry up to 20,000 Hz (optional)
Pediatric audiometry
VRA and CPA tests
Two types of reinforcements: three LCD displays and up to three animated toys, all controlled by Maestro.

Available signals Stimulus: pure tone, warble tone
2 external inputs and USB audio for speech audiometry
MIC input for live speech audiometry
Masking: NBN, WN, SN
Signals specification Attenuator step: 1, 2 and 5 dB
Presentation: Continuous, Pulsed (0.5, 1 and 2 Hz)
Warble: 5 Hz sin wave modulating signal
Available outputs and transducers AC: Headphones (TDH-39 / DD45)
HF headphones (HDA-300 / DD450)
Insert earphones (ER-3 / IP30)
BC: B-71 bone vibrator
Free field
Insert masking earphone: IME-100
Available tests
  • Pure Tone audiometry (HL and UCL)
  • Auto threshold (modified Hughsone-Westlake)
  • HF audiometry (optional): from 8 to 20 kHz (18 and 20 kHz not displayed in the audiogram)
  • Speech audiometry (SRT, WRS, MCL, and UCL)
  • SISI
  • Stenger, with pure tone or speech stimulation
  • 2 independent channels Master Hearing Aid
  • QuickSIN® test (optional)
  • Visual Reinforcement Audiometry (VRA) and Conditioned Play Audiometry (CPA) test (optional) with video or toys reinforces
Patient-operator communication Talk over: external microphone (included)
Talk back: clip-on patient microphone (included), monitor headset to listen to the patient (included)
Patient response trigger
Monitor signal Both channels monitored through the monitor headset (included)
Assistant monitor Used for the operator to assistant communication (optional)
Calibration Validity: 12 months
Separated calibration tables for each type of transducer (AC, AC-INS, AC-HF, INS-MASK, BC, FF)
All the parameters stored in the device through a dedicated software
Computer interface Connection: USB (driverless)
Compatible software: Inventis Maestro
Minimum requirements: refer to Maestro software specifications
Power supply External medical grade power supply.
AC consumption: 100-240Vac 50-60Hz 0.9-0.34A
DC output: 6V, 2A cont.
Mechanics Size (WxDxH): 30.8 x 21.7 x 6.7 cm / 12.1 x 8.5 x 2.5 in
Weight: 1.3 kg / 2.9 lbs



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