Skip to content

R37A Clinical Audiometer


R37A Clinical Audiometer

Compact dimensions, excellent ergonomics and a luminous 7” TFT display: R37A Resonance® Audiometer has been engineered to respond to the needs of ENT and Audiology Specialists, operating both in clinic and medical practice. Design is user-friendly and allows both device and accessories to be safely carried around in a practical carrying case, available on demand.

High-quality components ensure device reliability as well as long-term operation. Recognized dependability matches with efficiency. Test-report files, generated in PDF, can be initially stored on a USB-stick, then archived into external units or printed, thanks to the built-in thermal printer. Reports can be easily edited and customized with additional text and logos.

The R37A offers a complete range of clinical tests including air and bone conduction tests, SAL and speech audiometry, up to 20KHz High Frequency Test in R37A-HF confi guration. Speech material in English and Spanish is recorded on the Resonance SD-Card. Confi gurable tests and preferences designed to improve daily workfl ow and optimize speed and reliability of testing.

Test Types: 
• Pure Tone test, Auto-threshold, ABLB, Speech Test, Stenger, DLI, SISI, Bekesy,
Tone Decay, MLB, Multifrequency, MHA, GAP, DLF, High Frequency up to
20KHz (R37A-HF only)
• Quick-SIN, BKB-SIN (available on demand)

In the Box:
• DD45, ADC or HDA280 headset for audiometry testing
• IP30 insert earphones
• HDA300 headset for high frequency test (R37A-HF only)
• B71W bone conductor
• Insert-Transducer (for bone conduction masking)
• Operator headset with microphone and speaker (talk over and monitor)
• Patient microphone (talk back)
• Patient response push button
• Built-in fast thermal printer
• 1 roll of thermal paper
• Power supply cable (110 V)
• 1 spare fuse
• Device dust cover
• USB pen drive
• SD-card with multilingual speech material
• MDS* software

See brochure for specifications*


Zona Med Equipment: R37A Clinical Audiometer Brochure

General Specifications 


• Pure Tone test, Auto-threshold, ABLB, Speech Test, Stenger, DLI, SISI, Bekesy, Tone Decay, MLB, Multifrequency, MHA, GAP, DLF, High Frequency up to 20KHz (R37A-HF only)

• Quick-SIN, BKB-SIN (available on demand)


• L x W x H: 14.5” x 11.4” x 7”

• Net Weight: 7.7 lbs.

• Body material: Bayblend® self-extinguishing


• Multilingual


• Built-in fast thermal printer with paper width: 4.4” supplied as standard part


• Printed on thermal printer

• PDF report created directly from the device and stored on USB pen drive with the possibility to add patient data and tests comments via the USB keyboard (optional)

• Data transfer to PC using MDS* software


• Nr.1 USB host type A

• Nr.1 USB slave type B


• MDS* software with reporting and printing features

• Compatible with Windows® 7, 8, 8.1, 10

• Data transfer via USB cable


Audiometry Specs 


• 125 - 8000 Hz (with DD45)

• 125 - 12500 Hz (with HDA280)

• 8000 - 20000 Hz (with HDA300) (R37A-HF only)

• 250 - 8000 Hz (with B71-W)


• Frequency: < 0.5%

• Distortion: < 1%

• Attenuator linearity: 1dB per 5dB step, max 3dB whole range

• Range stimuli level: -10 up to 120 dB HL


• Pure tone: sine wave

• Warble: ± 5% frequency sine wave modulated, modulation: sine wave 5 Hz

• Narrow band noise: 24dB/oct filtered noise

• Speech noise: 1khz 12dB/oct filtered noise

• White noise

• External signal

• External mic

• Speech material recorded on SD card

• Master Hearing Aid: 1kHz 6, 12, 18, 24dB

High pass filters

• On/Off rise – fall time: 40 msec.


• ACR, ACL: 10 ohm DD45 matched pair earphone

• BC: B71W RadioEar

• INSERT: Button receiver

• Free field output: 600 ohm impedance

• Monitor Phone: headset with boom microphone


• Presentation: Normal, Reverse, Extended (present tone for 1 second from 20dB below the maximum level)

• Modality: Continuous, Pulsed (rate 0.5; 1 and 2 Hz), Alternated (ABLB and MLB - 0.5, 1 and 2 Hz)

• DLI increment levels: 0.1 in steps of 0.1dB up to 1.0dB; 1.5-2-3.4.5 dB DLI increment recurrence rates: 0.5Hz, 1Hz, 2Hz

• SISI increment recurrence rates: 0.2Hz, 0.5Hz, random

• Time on 300 msec.

• SISI increment level: 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 5 dB

• Bekesy: mode sweep and fixed; Continuous, Pulsed and LOT; exam duration 30sec and 60sec.