AVANT A2D+ Audiometer

Compact, PC-Based, Dual Channel Diagnostic Audiometer

The AVANT A2D+ Audiometer software  can run stand-alone or from within NOAH

The AVANT A2D+ is a dual channel, air, bone, speech and masking audiometer. It offers pure tone audiometry via earphones and bone conduction, masking and speech audiometry with SRT (Speech Recognition Threshold), WR (Word Recognition), SISI (Short Increment Sensitivity Index), ABLB (Alternate Binaural Loudness Balance) and Tone Decay Tests, QuickSIN and Automated Audiometry.

The product is compact, Approx 6.5” x 5” x 1.25” (L x W x H), and when combined with a laptop is portable and easily configured for any office layout.


  • Dual Channel Diagnostic Audiometer
  • Complete Air, Bone, Speech and Masking Audiometry
  • Built-in Special Tests, Word Lists and Auto-Scoring
  • Integrated QuickSIN
  • Automated Audiometry
  • HLS (Hearing Loss Simulator) & MHA (Master Hearing Aid) for 3rd Party Demonstration
  • PC- based and Portable
  • USB Connection to Computer
  • NOAH™, TIMS® and Sycle.Net™ Compatible

Call 888-392-1234 For More Information

Or send us an Email and one of our experienced sales team members will get back with you asap with all the details.

AVANT A2D+ Audiometer Top
AVANT A2D+ Audiometer Bottom Angled
AVANT A2D+ Audiometer Bottom
AVANT A2D+ Audiometer Bottom Angled 2
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Download the A2D+ Manuals, Data Sheets, Computer Specs, etc. here in PDF format

Technical Specs

ANSI S3.6-2018,Type 2 AE (IEC 60645-1&2) Tone Audiometry, Speech Audiometry

Channels: Two

Insert Earphones or TDH 39 Headphones (DD45). B71 Bone Conductor, Free Field – Line Level Output

Tone Stimuli:

Pure Tone, Warble Tone, Continuous Or Pulsed. Warble Modulation Frequency And Pulse Period Are User Adjustable.

Masking Signals:
Tone Audiometry: Narrow Band Noise (Default), Speech Weighted Noise, White Noise. Speech Audiometry: Speech Weighted Noise (Default), White Noise, External Recorded (Opposite Channel).

Frequency Range
USB Power Only:
Air: 125 Hz – 8000 Hz
Bone: 250 Hz – 8000 Hz
Sound Field: 125 Hz – 8000 Hz (Line Level)

Acoustic Distortion:

< 1.0% At 500 Hz, 100dB SPL

Noise Floor:

< -10dB HL From 125 Hz – 8000 Hz


1dB Or 5dB Steps, User Selectable

Minimum / Maximum Output:

-10 dB To 120 dB HL At 1 KHz – Air (¼ Inch Mono Jacks)
-10 dB To 75 dB HL At 1 KHz – Bone (¼ Inch Mono Jack)

Free Field Output:
Frequency Range 125 Hz – 8000 Hz
Dynamic Range 60-90+ dB SPL At 1 Meter Distance
(Using 50 Watt Stereo Amplifier With 89 dB Sensitivity Speakers)

Speech Input:
Microphone (3.5 mm Stereo Jacks)

I/O Jacks – 3.5mm
Operator Headphones (Output)
Operator Talk Forward Microphone
Patient Talk Back Microphone
Free Field (Line Out)

I/O Jacks – 1/4″
Left Air Conduction (2)
Right Air Conduction (2)
Bone Conduction
Patient Response Switch

Communication Port:
USB (Provides All Device Power)

Power Requirements:
USB Power +5 Volts DC, Less Than 500mA

Approx. 6.5″ x 5″ x 1.25″ (L x W x H)
Approx. 16.5 cm x 12.7 cm x 3.2 cm (L x W x H)

Weight: <1 lb < 500 g

Aluminum Chassis Bottom, Molded PC ABS With Stainless Steel Insert Top Cover With Plastic Feet

Environmental Requirements
Working Temperature Range From 50F (10C) To 95F (35C)
Humidity Range From 30 To 90 %
Atmospheric Pressure Range From 98 kPa To 104 kPa
Storage Temperature Range At Least From 0°C To 50°C