The AI-3 is an affordable A/D/A Converter/ Interface which features 8 Analog Ins and Outs, 24-Bit Conversion and 128 times oversampling.

Extended information

"The Alesis AI-3Ö interface offers an affordable solution for conversion between analog and digital audio using the ADAT Optical protocol. With eight analog inputs and outputs, 24-bit digital converters and ADAT Optical digital interface, the AI-3 is perfect for studios that want to form a digital interconnect between recorders, mixers and other compatible tools.

ADAT Digital Interface from the Creators of ADAT
The AI-3 provides eight analog inputs and outputs on balanced 1/4"" TRS connectors. These jacks feed 24-bit, 128 times oversampling A/D/A converters, offering a 96dB dynamic range. The digital signal can be routed through the ADAT Optical digital interface into any device that's compatible with the ADAT Optical format. The AI-3 also works in reverse, translating ADAT Optical digital audio signals back to analog with 24-bit precision.

Front Panel Meters and Compact Design
The AI-3's front panel shows signal presence and signal peaks on discrete LEDs for all eight channels. A switch allows for selection between balanced +4dBu and unbalanced -10dBV operation. Another front panel switch allows you to route the ADAT Optical signal through the AI-3 so you can use it in a multi-ADAT system without repatching. The simple rear panel hosts the eight input and eight output jacks, as well as the ADAT Optical interface. With its streamlined design, the AI-3 fits into a single standard 19"" equipment rack, saving valuable space in your studio.

ADAT Opticalàthe WorldÆs Digital Standard
The AI-3 will convert any analog signal to the ADAT Optical digital standard. ADAT Optical is the most widely-used digital interfacing protocol, since it carries eight channels of digital audio at up to 24-bits of resolution using a compact, inexpensive fiberoptic cable.

In addition to several Alesis products, nearly every digital mixer offers ADAT Optical as a standard or optional interface, so the AI-3 may be used to add analog inputs and outputs to consoles from manufacturers such as YamahaÖ, RamsaÖ, SpiritÖ, MackieÖ and others.
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Technical specifications

"Analog Input to Optical Output
Signal To Noise (A-wtg.):
100dB balanced, 100dB unbalanced

Dynamic Range (-60dBfs, 1kHz):
96dB balanced, 96dB unbalanced

THD+Noise (-0.5dBfs, 1kHz):
0.0025% balanced, 0.0023% unbalanced

Frequency Response:
20Hz - 20kHz, +0.05dB, -0.10dB balanced, +0.05dB, -0.15dB unbalanced

Optical Input to Analog Output

Signal To Noise (A-wtg.):
98dB balanced, 98dB unbalanced

Dynamic Range (-60dBfs, 1kHz): 95dB balanced, 95dB unbalanced

THD+Noise (-0.5dBfs, 1kHz):
0.0030% balanced, 0.0030% unbalanced

Frequency Response:
20Hz - 20kHz, ˜0.1dB balanced, ˜0.1dB unbalanced

Front Panel Controls/Indicators:
Optical source selector, Operating level selector, signal presence LEDs (8), Peak LEDs (8), Power switch

Rear Panel Jacks:
Power receptacle, ADAT Optical input and output, 1/4"" TRS inputs (8), 1/4"" TRS outputs (8)

Power:
100-240 VAC, 50-60 Hz Internal Transformer

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