Announcing the all-new iAudioInterface2. Designed from the ground up to work with all of the current Apple iOS products, iAI2 is the perfect companion to AudioTools, and the perfect stereo audio interface for all your iOS apps.
Compatible with iPhone 4, iPod touch 4, and iPad, iAudioInterface has these major features:
* 48V Phantom-powered XLR microphone input, with up to 50dB of gain**
* Balanced line input for transfer function measurements
* Balanced line output for signal generation
* Toslink digital audio output, mirrors line out at full level, also supports Dolby Digital 5.1 AC3 test signals (optional in AudioTools)
* Internal li-ion battery, draws no power from your device
* When charging with the included external adapter, also charges your attached iOS device, including iPad.
* Digital audio link to iOS device for lowest noise, and best quality. Uses our own A/D converters and DAC with precision USB audio clock recovery
iAI2 is the perfect companion for AudioTools, and also works with many iOS audio Apps, including Garageband, Skype, SignalScope, Mulit-Track Recorder, and more. Note that Apple does not support dock mics with the phone app.
Price: $399.99 Available October 2011Microphone Input
Standard XLR microphone connector.
Switchable 48V phantom power available that meets all specs for voltage and current.
Input gain 0dB to +50dB in 9 preset gain stages, set from within AudioTools.
Equivalent Input Noise (EIN) @+50dB gain -112dBu A-weighted
Microphone appears to iOS app as left input channel.
Digital Audio Output
Optical Toslink PCM digital audio output, sample rate 32k/44.1k/48k, set from iOS device. 16-bit (current iOS maximum).
Supports output of Dolby Digital AC3 Dolby Digital 5.1 test signals, and DTS 6.1 test signals, optional in AudioTools. Requires iOS5.
Line Input
Fully balanced 1/4" TRS line input, appears to iOS app as the right input channel.
May be switched to a stereo unbalanced input.
Three gain ranges, selected from AudioTools
Input Impedance 40k balanced, 20k unbalanced
-80dBU to -10dBu
-60dBu to +15dBu
-40dBu to +40dBu
Line Output
Fully balanced 1/4" TRS mono line output.
Maximum output level +12dBu
Output may be switched to stereo, suitable to drive 32 Ohm headphones.
ADC and D/A Converters
For dock-connector digital audio, the iOS device sets the sample rate and bit depth of the signal. Currently Apple supports 32kHz, 44.1kHz, and 48kHz sample rates, all at a bit depth of 16 bits.
We license a proprietary high-resolution USB clock recovery algorithm that provides a highly stable timebase for our converters. This recovered-clock digital audio signal is presented unaltered at the optical TosLink output. Sample rate converters are never used in our hardware.
iAI2 uses Wolfson stereo codec with a 24-bit multi-bit sigma delta ADC and switched capacitor multi-bit sigma delta DACs, which operates at an oversampling rate of 128fs for both ADC and DAC.
Internal li-ion Battery
Charge time 3 hours.
Run time 4-5 hours depending on usage.
iOS Device Charging
High-current charging designed for iPad, will also fast-charge iPhone 4 and iPod touch 4.
Charger Specifications
Charges with 10V - 18V DC, 5.5mm connector with 2.1mm pin, pin positive. Requires 1.5A min. Ships with 12VDC 1.5A universal AC charger with multiple plug configurations.
Compatibility
Works with iPhone 4, iPod touch 4, and iPad.
Does not work with older Apple iOS products.
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