Audix APS911 - Phantom Power Adapter and AA Battery Power Supply
The Audix APS911 is the ultimate professional solution for powering high-quality electret condenser microphones. This hybrid device functions as both a versatile phantom power adapter and a portable battery power supply, specifically designed for microphones terminating in female mini XLR connectors. Its robust engineering ensures that your ADX, HT, or MicroD series microphones always receive the precise, clean power they need, whether in a professional studio with mixing consoles or on field recordings where electricity is limited.
With a rugged die-cast zinc alloy chassis and gold-plated connectors, the APS911 is not just an accessory, but a critical tool for ensuring audio signal integrity. Its clever design allows it to adapt standard phantom power (9 to 52 volts) to the low-voltage requirements of electret microphones, or operate completely independently using a single AA battery, making it a lifesaver for sound engineers and musicians on the go.
Main features
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Hybrid Power Supply: Works by converting external Phantom power (9-52V) or by using an internal 1.5V AA battery when no consoles are available.
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Function Switch: Easily accessible switch with positions for On (flat response), Off (energy saving) and filter activation.
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Bass Roll-Off Filter: Incorporates a selectable low-cut filter to eliminate mechanical noise, stage vibrations, or unwanted low-frequency "hum".
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Premium Construction: Die-cast metal (zinc alloy) housing with durable black finish, designed to withstand heavy use on tours and stages.
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Professional Connectivity: Mini XLR Male (3 pins) input for microphone and standard XLR Male output for connection to mixers or preamplifiers.
Product benefits
The main benefit of the Audix APS911 is its ability to provide complete connection freedom . By allowing the use of AA batteries, it frees the user from dependence on consoles with phantom power, ideal for videographers or musicians connecting to instrument amplifiers that lack 48V power. Furthermore, its low-noise circuitry ensures that the signal remains pristine, without introducing hiss or interference, which is vital for highly sensitive microphones such as lavalier or headset microphones.
The integrated low-cut filter is another crucial advantage; when activated, it instantly cleans the signal of handling or wind noise, saving time in post-production and corrective live equalization.
Use cases
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Outdoor Recording: Perfect for powering lavalier or boom microphones connected to DSLR cameras or portable recorders that do not supply adequate Phantom Power.
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Live Presentations: Ideal for speakers or instructors using headset microphones (such as the Audix HT series) and needing mobility or connection to simple PA systems.
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Acoustic Instruments: Use with clip-on microphones (such as the Audix MicroD) on violins or saxophones, allowing them to be connected to effects pedals or guitar amplifiers.
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Backup Power Supply: An indispensable tool in any sound technician's backpack to solve unexpected power problems at events.
Frequently Asked Questions
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What type of microphones are compatible with the APS911?
It is designed for electret condenser microphones that use a Mini XLR connector (usually 3 or 4 pins; the APS911 has a 3-pin input). It is the standard for models such as the Audix ADX40, ADX60, MicroD, HT2, and HT5, among others.
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Does the battery drain if I use external phantom power?
The device is designed to manage energy efficiently. The switch has an "Off" position which is recommended when not in use to conserve battery life.
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Does the adapter affect the sound quality?
No, on the contrary. Its circuitry is designed to maintain a full frequency response (25 Hz - 20 kHz) and low distortion, ensuring that the microphone's character remains intact.
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What is the function of the Roll-off filter?
This filter attenuates low frequencies (typically below 80-150 Hz) to reduce low-frequency ambient noise, such as distant traffic, air conditioning, or knocks on the microphone stand.
Project description
The Audix APS911 is a professional phantom power adapter and battery pack housed in a heavy-duty die-cast zinc alloy enclosure. The device accepts a microphone input via a 3-pin male mini XLR connector and provides an output via a standard 3-pin male XLR connector. It operates on a 1.5V AA battery (supplying 9V to the microphone) or by adapting an external 9-52V DC phantom power supply. It features a three-position switch for power on/off and bass roll-off activation, a frequency response of 25 Hz to 20 kHz, and a balanced output impedance.
