Performance Audio Equalizer with PreAmplification and Headphone Drive This versatile audio equalizer offers precise sound control, strong compatibility, and reliable performance for both professional and use. Designed with quality components from TI and ST, it delivers audio clarity across a wide range of frequencies. Key Features and Specifications: Power Supply: Operates between DC 5V to 12V for flexible use in various setups. Interface Compatibility: Accepts DC 5.5x2.1mm or 3.5mm connections for easy integration with existing equipment. Power Consumption: Efficient design with approximately 1.8W consumption. Static current is 390mA at 5V and about 140mA at 12V. Equalizer Control: Sevenband adjustment with ±12dB range for finetuning sound. Frequency bands include 60Hz, 150Hz, 400Hz, 1kHz, 3kHz, 6.5kHz, and 15kHz, allowing for precise shaping of bass, midrange, and treble. Quality Circuit Design: Built with original TL074 circuitry for stable and accurate audio processing. PreAmplification Gain: 4580 classic op amp provides clean 5x gain (14dB) for enhanced audio signal strength. Headphone Amplification: Dual NE5532driven 47 headphone circuit delivers clear power to headphones from 16 ohms to 600 ohms. Impedance: Input impedance is 20K and output impedance is 600 ohms for signal matching. Input/Output Options: Supports standard 3.5mm interfaces with 3pole and 4pole plugs. Headsets with microphones work seamlessly for voice calls on mobile devices. Additional RCA (lotus) interface set available for versatile connectivity. Use Scenarios: 1. Gaming Setup: Enhances game sound effects and allows clear voice calls with compatible gaming headsets, improving immersion and team communication. 2. Music Listening: Tailors sound output to preferences with precision equalization, delivering richer bass or clearer treble depending on listening needs. 3. Home or Studio Audio System: Acts as a reliable equalizer and preamp for improving sound quality in home entertainment systems or studio monitoring setups. This product stands out for its combination of strong amplification, versatile equalization control, and broad compatibility with headphones, audio sources, and connection types. Its durable construction and efficient power use make it a dependable choice for audio enthusiasts, gamers, and professionals looking for a balance of performance and adaptability.