Multichannel line-level test interface with TDM


The AIO-LT is a combination analog and digital test interface with two line-level outputs, four microphone inputs, full-duplex TDM, and a standard USB audio interface in a single unit.

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

The AIO-LT TDM interface is software configurable and supports up to 10 full duplex channels.

The AIO-LT presents a standard sound card interface and is compatible with most acoustic test software.



4 IEPE microphone / line inputs with TEDS

2 differentially balanced line / headphone outputs

10×10 TDM interface

Locking USB 2.0

USB 2.0 audio with locking connector



Sample rate48 kHz
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 Vpk
Maximum input voltage15 Vpk (do not exceed)
Dynamic range (1x gain, A-weighted)> 110 dB
THD+N (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 (THD+N < .1%)32 mW continuous at 1 kHz
Maximum output voltage2.65 Vpk
Frequency response±0.5dB 20 Hz – 20 kHz
Minimum load32 Ω
Input channels10
Output channels10
Clock sourceInternal or external clock sync
Bits per frame256
Bits per sample24 or 32
Frame sync width1 - 128 bits
Frame sync positionBit 0 - 255
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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