Resonance R07A Screening Audiometer
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Resonance R07A Screening Audiometer

Product Code: R07A

  • Portable screening audiometer with air conduction capabilities only 
    • frequency range: 125 Hz to 8000 Hz
    • attenuation levels: -10 dBHL to 100 dBHL (step size 5 dB, 2 dB, 1 dB)
    • packaged with calibrated DD45 audiometric headphones
    • includes patient response button
    • built-in talk forward microphone 
    • manual and auto testing capabilities
  • Powered by mains AC/DC adapter (included) that plugs into standard wall outlet
  • MDS software (no license required) allows data transfer to PC via USB cable, data storage (locally or in Noah), reporting and printing features. For MDS user manual, scroll down to Product Documents and click Software Manual.
  • Internal memory stores up to 50 tests
  • Includes soft carrying case
  • Three year warranty


  • r07a audiometer
  • DD45 headphones
  • Patient response button
  • AC power supply
  • 4 AA batteries
  • 100 Audiogram sheets
  • Mini USB cable (for data transfer)
  • USB containing the following files
    • r07a user manual
    • MDS software 
    • Calibration Sheet
    • Safety Test Sheet
    • Final (Quality Inspection) Control document
    • Declaration of Conformity document
    • File with device serial number with user manual and MSD software
  • Blue/Red bi-color pencil
  • Soft carrying bag
  • DD45 Headphone Cable for r07a, 2 x 3.5mm jack (item #S6000082)
  • DD45 Headphones for r07a, 2 x 3.5mm jack (item #S6000084)
  • Immittance Tips 
    • IT008 IT Series Eartips, 8mm Green
    • IT010 IT Series Eartips, 10mm, Red
    • IT012 IT Series Eartips, 12mm, Blue
    • IT014 IT Series Eartips, 14mm, Green
    • IT016 IT Series Eartips, 16mm, Red
    • IT001 IT Series Eartip Kit in Plastic Box (25 of each eartip size)

Description of Hughson-Westlake Auto-Threshold Feature: 

The r07a offers an "auto-threshold" feature whereby the patient is able to control signal presentations using the patient response button. This feature eliminates the need for the provider to manually adjust and present air conduction signals during threshold testing. The r07a automatically generates signals according to the Hughson-Westlake protocol (down 10 dB, up 5 dB) for frequencies enabled in the SETUP menu. Based on the patient's responses, the r07a will register a threshold when 2 out of 3 responses are captured.  Once threshold is obtained, the same protocol is automatically repeated for the next test frequency.  Once testing is completed in one ear, the unit will automatically repeat automatic threshold testing in the other ear.


How to Configure your r07a for Auto Threshold Feature:

The auto threshold feature must be enabled within the setup menu of the r07a. To determine if the feature is already enabled, with the r07a already ON, quickly press and release ON/OFF to access MENU. Using the blue dB  or Hz dial, scroll the menu. If <<AUTOTHRESHOLD>> appears as a menu option, the feature is enabled. To activate, press F2 to select. You should see START immediately above the F1 button.

If <<AUTOTHRESHOLD>> does not appear as an option, enable the feature as follows:

1. Press ON/OFF button to access MENU 

2. Use blue dB or Hz dial to scroll to <<SETUP>>; quickly press dial button down and release to access SETUP MENU. 

3. Use dial to scroll to <<AUTOTHRS: NO>> then press F1 button (CHANGE) until <<AUTOTHRS: NORM>> appears.

4. Press F2 (STORE).  "STORED!" should appear in the display, indicating the feature has been enabled.

5. Press ON/OFF to Exit SETUP MENU. AUTOTHRESHOLD should now appear as a menu choice. 


How to Administer Auto Threshold Feature:

Instruct patient to press and keep pressing the patient response button as long as a tone is heard, and to immediately release the patient response button as soon as the tone is no longer heard. Testing will begin in the ear set as default in the set up menu and include frequencies enabled in the set up menu. The feature automatically starts testing the other ear once testing has been completed in the first ear. 


How to Enable Frequencies for the r07a:

Ten frequencies are available including:  125, 250, 500, 750, 1500, 2000 3000, 4000, 6000 and 8000 Hz.  With the exception of 1000 Hz, the remaining nine frequencies can either be enabled (and appear as an option during testing) or disabled such that they do not appear as an option. To disable/enable frequencies:

1. Press ON/OFF button to access MENU 

2. Use signal level or frequency dial to scroll to <<FREQUENCIES>>; quickly press dial button down and release to access SETUP MENU. 

3. For the displayed frequency, press F1 (OFF) or press F2 (ON) to disable or enable the frequency, respectively. Repeat the process for all available frequencies. 

How is the r07a powered?

The unit may be powered from a standard power cord (included) that plugs into a wall outlet, or with 4 AA batteries (included).  

How do I turn the r07a screening audiometer on?

Press the green ON button located under the LED screen (first one on the left). To switch the device off, use the same button, keeping it pressed for a few seconds. 

NOTE: the ON/OFF button is a multi-function button.  When the device is ON, the same button can be quickly pressed to access the ro7a main menu. More information about the main menu is provided in this section. 

How do I change the frequency and intensity of the signal?

Use the left blue knob labeled "dB" to change intensity (dBHL) of signal.  Use the right blue knob labeled "Hz" to change frequency of the pure tone signal.

How do I present a pure tone signal? 

Gently press the SIGNAL button located between the two blue dials, it is a soft touch button that does not require much pressure to activate. When the signal is presented, a speaker icon will appear in the top right hand corner of the display, immediately adjacent to the battery icon.  

How do I change from right to left ear? 

Press the blue R/L button located at the top right hand portion of the unit. 

What is the purpose of the blue INPUT button? 

This button is used to select steady, pulsed or warble tone presentation. On the bottom right side of the display screen, one of the following symbols will appear: 

Press the input button to scroll through choices. The image appearing on the display represents the selected tone presentation.  

How do I access the main menu?

With the device ON, quickly press the ON button again to access the main menu.  Using either blue dial, you can scroll through the five main menu choices of PATIENT, SETUP, FREQUENCIES, CALIBRATION, and ABOUT.  To scroll through specific menu choices, select one of the five menu choices by either pressing down and releasing either blue dial or by pressing the green F2 button (located below the display, on the right). The following is a summary of main menu options:

  • PATIENT: results of up to 50 patients may be stored.  Patients are identified numerically as PATIENT 1 through PATIENT 50. The menu allows to select or delete patient data
  • SETUP: allows provider to change a variety of new default parameters including transducer type (DD45 vs TDH-39), signal modality, auto power off settings (3, 4 or 5 minutes), attenuation step size (1, 2 or 5 dB), length of pulsed stimulus, etc. and to store changes permanently as new defaults. 
  • FREQUENCIES: allows provider to enable or disable frequency options
  • CALIBRATION: password protected choice accessible by calibration technicians
  • ABOUT: provides serial number of device and other information

How do I find the serial number of my audiometer? 

The serial number of your r07a Audiometer is located in several different places.  The serial number may be found on the bottom of the r07a unit.  It is listed on the PIN and PUK document included in product packaging.  In addition, the USB thumb drive packaged with the unit contains a file listing the serial number of the r07a Audiometer.  

What is the MDS software on the USB thumb drive?

MDS software allows transfer of data from certain Resonance models to a PC.  It also provides reporting and printing features.  The r07a screening audiometer does NOT require an MDS license although it must be installed on your PC.  The software is located on the USB thumb drive packaged with the unit.  Go to the MDS Suite folder, click MDS Setup and follow installation instructions. Be sure to click "Create Shortcut to Desktop" when prompted to have the software icon appear on your desktop for easiest access. 

The MDS software on my PC is asking for a password.  What do I do? 

Launching the MDS software on your PC will generate the following authentication prompt (or something similar): 

The default user is "admin" with a default password consisting of the lower case letter a. Type "a" into the password to access the software.  Once the software is launched, click MENU located at the top left, select TOOLS then OPTIONS. Click the necessary buttons to add, edit, and delete users and other information including passwords. For more information on MDS software, see Product Docs tab on the Oaktree Product Page and select Learn More

Controls (Front Panel)

Where are the connection jacks located to plug in headset and other accessories?

Connection jacks care located on the left side of the R07A as follows:  



C: socket for patient response button

D: socket for power supply

E: socket for USB cable for transfer to PC

How do I add my logo to the report?

  • go to MENU
  • select TOOLS
  • click the BUSINESS INFO tab. 
  • right click on image place holder to LOAD logo   

Things to Know Before you Buy

The unit may be powered by traditional power cord OR 4 AA batteries

The r07a may be powered by a traditional power cord using a standard AC outlet.  In the event access to an AC outlet is not convenient or available, the r07a may be powered by 4 AA batteries.  Both the power cord and 4 AA batteries are included in the packaging. This screening audiometer was designed with the necessary flexibility to operate as needed in any environment.  

Technical support, calibration, and service is provided and managed through Oaktree Products

Responsive, efficient, and effective support is critical for busy providers to be able to use their equipment without delay. Equipment calibration is required annually. Equipment may need to be serviced over the years.  Oaktree Products has made arrangements to coordinate and provide support, calibration and service to allow providers to focus on their clinical practice.