AIO-L2

Multichannel Line-level Test Interface

AIO-L2

The Echo AIO-L2 is a multichannel acoustic interface designed for production-line testing and QA/QC verification. Combining four balanced line-level/headphone outputs and eight mic/line analog inputs in a single unit, the AIO-L2 is an integrated, cost-effective, and reliable high-throughput audio test solution.

Each input can be individually configured as a line level input or as a measurement microphone input. Microphone inputs include an IEPE microphone conditioning amplifier with integrated constant current power supply (CCP). Line level outputs can also drive most headphones.

The AIO-L2 presents a standard USB audio sound card interface and is compatible with most audio test software including APx Flex, LabVIEW, Soundcheck, and ARTA.

features

features

8 IEPE microphone / line inputs with TEDS

4 differentially balanced line / headphone outputs

Locking USB 2.0

USB 2.0 audio with locking connector

Locking USB 2.0

Quiet fanless design

specifications

specs

Sample rates48 kHz, 96 kHz, and 192 kHz
USBUSB 2.0 audio class compliant
Supported operating systemsWindows 7 or later
macOS
Audio APIsASIO, WASAPI, CoreAudio
AC PowerUniversal power supply
90 - 264 VAC at 50 or 60 Hz
Input bandwidth72 kHz
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
Minimum load32 Ω
Full-scale output voltage2.65 Vpk
Frequency response±0.5 dB (20 Hz – 20 kHz)
Output bandwidth80 kHz
Dynamic range (A-weighted)> 110 dB
THD+N (A-weighted)< -94 dB (20 Hz – 20 kHz)
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 (4 AIOs)
22” (55.8 cm) x 22” (55.8 cm) x 12.6” (32 cm)
42.5 lbs (19.3 kg)

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