Gainlab Audio Auditor
Professional 500 Series Headphone Amplifier
The Gainlab Audio Auditor is a high-performance professional headphone amplifier designed for the 500 Series format. Built for studio and mobile recording environments, it delivers exceptional audio clarity, high output power, and reliable protection for both engineers and headphones. Its compact design makes it ideal for producers and audio professionals who rely on portable 500 Series systems without compromising sound quality.
Engineered with a pure Class A output stage, the Auditor provides ultra-low distortion, a linear frequency response, and exceptionally large headroom. This ensures accurate monitoring and fatigue-free listening, even during long sessions. The amplifier can drive headphones across a wide impedance range while maintaining stable performance and consistent sonic character.
To ensure safe and predictable operation, the Auditor includes comprehensive headphone protection against DC offset, overcurrent, and power-on transients. Clear LED indicators display input signal and power status, allowing fast visual monitoring at all times. Additional features such as mono monitoring, mute functionality, and headphone presence detection make the Auditor a practical tool for everyday professional use.
Thanks to its 500 Series design, the Gainlab Audio Auditor fits into any standard chassis and supports signal pass-through. Incoming line-level audio is routed unchanged to the rear outputs, making it easy to daisy-chain the signal to monitor speakers, recording devices, or additional headphone amplifiers.
Key Features
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Class A output stage
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Ultra-low distortion performance
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High output power for demanding headphones
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Mono monitoring function
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Mute function
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Headphone presence detection
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Input signal indicator
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Power indicator
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Headphone protection circuitry
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Line-level signal pass-through
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500 Series compatible design
Technical Specifications
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Input: Male card edge connector
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Output: Male card edge connector
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Maximum power: greater than 1 W per channel
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Frequency response:
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10 Hz to 20 kHz ±0.005 dB
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10 Hz to 100 kHz +0.05 dB / −1 dB
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Total harmonic distortion: less than 0.005 percent at 200 mW
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Output impedance: less than 1.1 ohms
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Format: 2-slot 500 Series module
Signal Pass-Through Function
The Gainlab Audio Auditor processes line-level signals from the rear connectors of a standard 500 Series chassis and routes them to the headphone output. At the same time, the signal is passed through unchanged to the rear output connectors, enabling easy integration with monitor controllers, active speakers, audio interfaces, or additional headphone amplifiers.
