Multichannel acoustic test interface with impedance measurement


The AIO-S is a multichannel acoustic interface built for production-line testing. Combining four amplifier outputs and six analog inputs in a single unit, the AIO-S is an integrated, cost-effective, and reliable mass-production audio test solution.

One of the amplifier outputs also incorporates dedicated voltage and current inputs for impedance measurement.

Each input features an IEPE microphone conditioning amplifier with integrated constant current supply and can also accept line level signals.

The AIO-S presents a standard USB audio sound card interface and is compatible with most audio test software.




6 IEPE microphone / line inputs with TEDS

3 amplifier outputs

Locking universal power connector

Amplifier output with impedance measurement

Locking USB 2.0

USB 2.0 audio with locking connector



USBUSB 2.0 audio class compliant
Supported operating systemsWindows 7 or later
Audio APIsASIO, WASAPI, CoreAudio
AC PowerUniversal power supply
90 - 264 VAC at 50 or 60 Hz
Input impedance1 MΩ
Input gain1x, 10x, and 100x
Full-scale input voltage (1x gain)±8.75 V
Maximum input voltage±15 V (do not exceed)
Dynamic range (1x gain, A-weighted)> 110 dB
THDN (1x gain, A-weighted)< -95 dB (20 Hz – 20 kHz)
Frequency response±0.5 dB (20 Hz – 20 kHz)
Constant current supply4 mA, 21 V excitation voltage
TEDSIEEE 1451.4 Class 1
Output power (THDN < .1%)10 W continuous at 1 kHz
Maximum output voltage±13.5 V
Frequency response±0.5 dB 20 Hz – 20 kHz
Frequency response±0.5dB 20 Hz – 20 kHz
Full-scale input voltage±8.75 V
Full-scale input current±4.375 A 
THDN (A-weighted)< -95 dB 20 Hz – 20 kHz
Frequency response±0.5dB 20 Hz – 20 kHz

The SPKR connector is both an amplified output and a voltage/current monitoring input for impedance measurement.

Single unit
17.5” (44.4 cm) x 8.75” (22.2 cm) x 1.75” (4.4 cm)
7.2 lbs (3.3 kg)
Single unit boxed with cables
21” (53 cm) x 10” (25.4 cm) x 5” (12.7 cm)
8.75 lbs (4 kg)
Shipping carton (6 AIOs)
22” (55.8 cm) x 22” (55.8 cm) x 17” (43.1 cm)
59.5 lbs (27 kg)

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