Products GSI 61

GSI 61 Two-Channel Clinical Audiometer


The GSI 61 is the two-channel clinical audiometer from the most respected name in the audiological industry: Grason-Stadler. With its state-of-the-art, two channel design, the GSI 61 allows for fast, accurate pure tone and speech testing using phones (TDH, insert and high frequency), bone vibrator and sound field speakers for output.

It features both status and audiogram screen layouts for data presentation. And it even has an articulating screen - making the GSI 61 not only easy to use, but easy to view, too!

At Grason-Stadler, we know that speed of testing and ease of use are two of the most important considerations when purchasing a clinical audiometer. That's why we developed the GSI 61. We took the very best features from our GSI 10 and GSI 16 and designed them into the GSI 61 - all to give you everything you could possibly need to conduct tests quickly and easily, both today and in the years to come.

The GSI 61 come with everything you'll need to perform a clinic audiometric test battery with maximum speed and efficiency. Features that further enhance your testing capabilities are: dual channel control with mixing/routing capabilities which allow the operator to mix signals and direct them to either or both ears, high frequency capabilities, direct calibration for insert earphones, auxiliary inputs, scorer/counter, test storage, transfer and hard copy printouts using an HP color DeskJet printer.

GSI 61 is EMR/EHR compatible using GSI Suite

For more information on GSI Suite click here.


Speed, Versatility and Quality

Thanks to nearly 50 years of experience in the audiological industry, you can count on Grason-Stadler to deliver all those things and more. But don't take our word for it. See for yourself why the GSI 61 is the only clinical audiometer you'll ever want to use!

  • The Versatile Two-Channel Audiometer
  • GSI 61 Sets a Standard in Clinical Audiometry


General Specifications: 19.68"(W) x 15.35"(D) x 12.59"(H) (LCD raised)
Height with LCD lowered – 5.9"
Weight: 19.18lb
Shipping Weight: 29.98lb
Power Consumption: 90 Watts
PURE TONE – CHANNELS 1 AND 2: Frequency Range:
Air Conduction: 125Hz to 12,000 Hz
High Frequency:* 8,000 Hz to 20,000 Hz
Bone Conduction: 250 Hz to 8,000 Hz
Sound Field:* 250 Hz to 12,000 Hz (8,000 Hz to 16,000 Hz with High Frequency option enabled along with basic speakers)
Paired Insert:* 125 Hz to 8,000Hz
Single Insert:* 250 Hz to 6,000 Hz
Intensity Range:**
Air Conduction: -10 dB HL to 120 dB HL
High Frequency:* -20 dB HL to 100 dB HL (with Sennheiser HDA 200 Phones)
Bone Conduction
- Mastoid: -10 dB HL to 80 dB HL
- Forehead: -20 dB HL to 70 dB HL
Sound Field (basic speakers):* -10 dB HL to 90 dB HL
Paired Inserts:* -10 dB HL to 110 dB HL
Single Inserts:* -10 dB HL to 100 dB HL
Masking Intensity Range: (Calibrated in effective masking)
Narrow Band Noise: Maximum dB HL is 15 dB below tone
White Noise: Maximum dB HL is 30 dB below tone
SPEECH – CHANNELS 1 AND 2: Microphone: For live voice testing and communications.
External A and External B: Accepts recorded speech material from external stereo tape cassette or CD player
Intensity Range:
A Air Conduction: -10 dB HL to 105 dB HL
Bone Conduction
- Mastoid: -10 dB HL to 65 dB HL
- Forehead: -10 dB HL to 55 dB HL
Sound Field (basic speakers):* -10 dB HL to 90 dB HL
Paired Inserts:* -10 dB HL to 95 dB HL
Single Inserts:* -10 dB HL to 95 dB HL
Masking Intensity Range:
Speech Noise:
- Air Conduction (TDH 50P and Insert Phones*) and Bone Conduction: Maximum dB HL are the same as the speech type signals
Sound Field (basic speakers): -10 dB HL to 80 dB HL
White Noise: Equal to Speech Noise
SIGNAL FORMAT: Steady: Tone Continuously present
Pulsed: Tone pulsed 200 msec ON, 200 msec OFF
FM: Tone modulated +5% of center frequency at a rate of 5 Hz.
SPECIAL TEST CAPABILITIES: ALT: Tone alternating between Channel 1 and Channel 2. Channel 1 is 400 msec ON, 400 msec OFF followed by Channel 2, 400 msec ON, 400 msec OFF.
SISI: An intensity increment is added to a tone in the selected channel for 200 msec, every 5 seconds. The HL increments are available in 1,2 or 5 dB steps.
High Frequency: Pure tone testing in the frequency range of 8,000 Hz to 20,000 Hz using High Frequency phones. The frequencies available for testing are: 8,000 Hz, 9,000 Hz, 10,000 Hz, 11,200 Hz, 12,500 Hz, 14,000 Hz, 16,000 Hz, 18,000 Hz and 20,000 Hz (Optional)
COMMUNICATIONS AND MONITORING: Talk Forward: Permits the tester to speak through the test microphone into the selected transducer at the intensity level set by the front panel controls.
Talk Back: Allows the tester to listen to comments from the subject in the testing booth.
Monitor: The monitor headset or monitor speaker can be used by the tester to listen to Channel 1, Channel 2 and/or Talk Back signals.
SUPPLIED ACCESSORIES: Test Headset (Matched set TDH-50P) . .8000-0063
Bone Vibrator (B71) . . .8000-0130
Subject Response Hand switch . . .7874-0156
Test Microphone/Monitor Headset with coiled cord . .1761-9623
Talk Back Microphone . .8000-0039
Patch Cords, 6 ft. Grey (4/each) . . .4204-0505
Power Cords (Country and voltage specific)
I Instruction Manual . . .1761-0100
OPTIONAL ACCESSORIES: CD Player . . .1761-9621
Stereo Tape Cassette . .1761-9622
Speakers, Basic (90 dB) with cables . .1761-9630
Speakers, High Performance (96 dB) with cables . .1761-9635
Booster Amplifier with cables, for use with the High Performance Speakers only . . 1761-9637-xx
Sound Field System, High Performance . 1761-9639-xx (Incl. High Performance Speakers (102 dB) and Booster Amp)
Paired Insert Phones (EARTONEEARTONE™ 3A) . .1700-9606
Single Insert Phone (470 Ω) . .1700-9609
High Frequency Headphones with booth cables . .1761-9602
High Frequency Cables to GSI 61 . . .1761-9605
Remote Dual USB Ports Computer/Printer . . .1761-9685
Printer, Color (120 V only) . .1761-9610
Service Manual . . .1761-0110
Audio Tymp Module for Noah 3.1 . . .1002-9600
GSI 61™:
English . .1761-9650E
French . . .1761-9650F
German . . 1761-9650G
Italian . . 1761-9650I
Spanish . . .1761-9650S
QUALITY SYSTEM: Manufactured, designed, developed and marketed under ISO 13485 certified quality system
COMPLIANCE / REGULATORY STANDARDS: Designed, tested and manufactured to meet the following domestic (USA), Canadian, European and International Standards:
AN ANSI S3.6, ANSI S3.43, IEC 645-1, IEC 645-2, ISO 389
UL UL 2601-1 American Standards for Medical Electrical Equipment
IE IEC 601-1, EN 60601-1 International Standards for Medical Electrical Equipment
CSA C22.2 # 601-1-M90
Medical Device Directive (MDD) to comply with "EC Directive" 93/42/EEC
*Optional accessories
**NOTE: The maximum HL values are applicable to the middle frequencies only.

E-Record Solutions

GSI 61 E-Record Solutions Compatibility

Below are six E-Record Solutions that are compatible with the GSI 61. Explore customized Electronic Record Solutions for any environment. To learn more about each of the individual solutions click on the "read more" tab.

GSI Suite

GSI Suite™ is compatible with the GSI AudioStar Pro™, GSI 61™, GSI TympStar™ and GSI 39™. With a single button press, data is transferred from the instrument to the software where it is stored or a report can be generated. Edits to the report are allowed until the test session is locked. Audiometric and tympanometric test results are combined into a single or multi-page report, improving and supporting the needs of the contemporary clinic. A NEW custom report designer satisfies the unique reporting needs of every facility. Counseling overlays assist the clinician with hearing aid fittings to discuss hearing loss results.


OtoAccess™ is a SQL database used to network multiple audiometric systems or offices, creating one master database. GSI Suite is a module within OtoAccess. Data from the GSI AudioStar Pro, GSI 39, GSI TympStar, and GSI 61 can be transferred into GSI Suite. All the functionality of GSI Suite is available in the module. Both packages, GSI Suite and OtoAccess, increase the efficiency of the contemporary audiology practice.

Audio Tymp Module

Noah Integration includes two options for audiometric data transfer - GSI Suite and the AudioTymp Module. All patient data is stored in the Noah database and can be accessed by all other Noah modules. This eliminates the need to manually enter thresholds for hearing aid fittings. As a module of Noah 4, GSI Suite makes the audiometric data compatible with practice management solutions like Blue Print Solutions, TIMS for Audiology and The various practice management solutions provide additional report options as well as HL7 interface. Noah networking options include LAN, WAN and wireless transmission.

GSI Suite: Data from the GSI AudioStar Pro, GSI 39, GSI TympStar, and GSI 61 may be transferred into GSI Suite. All the functionality of GSI Suite is available as a module within Noah 4. Data may be reviewed in Suite, Noah Aud module or in the Audiogram Preview area. Multiple reporting options are available. GSI Suite is compatible with Noah 4 only.

Audio Tymp Module: Data from the GSI AudioStar Pro, GSI TympStar, GSI 61, GSI 39 and GSI legacy products may be transferred into the AudioTymp Module. Data can be reviewed in the Audiogram Preview area or the Noah Aud Module. Multiple report options are also available. The AudioTymp module is compatible with Noah 3 and Noah 4.


Data from the GSI AudioStar Pro, GSI TympStar, GSI 39, GSI 61 and GSI legacy products may be transferred into the AudBase software program. Data may be saved in multiple formats (pdf, jpeg, tiff, etc.) and displayed in various reporting styles (single page, tabular, sequential). These options are standard in the "out of the box" software package. Customized reports are also available in the custom software package. Additional testing modules, like cochlear implant evaluations, are embedded in the AudBase audiogram. Using the 4D database, the data is accessible for extended research or sharing among various research facilities. Data is manually attached to the electronic health record using the "out of box" solution. Additionally, the custom solution offers a bi-directional HL7 interface that provides a seamless one button transfer into electronic record. Seamless interface solutions exist for Epic, Cerner, Centricity, NexGen and Greenway Medical. Interface to other electronic health systems can also be developed.

Direct Interface

GSI provides public access to the data streams of our products. 3rd party EMR companies may integrate the audiometric data from GSI instruments directly into their EMR/EHR programs. The direct transfer of data gives the physician immediate access to audiometric data in the electronic record. Data from the GSI AudioStar Pro, GSI TympStar, GSI 39 and GSI 61 may be transferred directly to AllMeds Specialty EHR and Greenway Medical. Reporting format is determined by AllMeds or Greenway Medical.

Quasar Connect

From the connected workstation, data is pulled from the GSI AudioStar Pro and GSI 61. Data is displayed directly in the audiogram module in Quasar. Once in Quasar, the audiometric data is available for review at that workstation as well as the Denver Acquisition and Logistics Center. The data may be viewed in tabular or graphical display by anyone with access to CPRS. It can also be used by the Remote Order Entry System (ROES) to place hearing aid orders or supplies.