Performance 7Band Car Audio Equalizer with Headphone Compatibility 3.5mm Input Interface: Features a standard 4pole 3.5mm input jack, allowing connection to headsets with a builtin microphone for clear voice calls on mobile phones. Includes an additional group interface output for expanded connectivity. Durable Aluminum Alloy Build: Constructed from strength aluminum alloy for longlasting reliability and stable performance. Designed to operate on DC5V to DC12V power supply and supports dualchannel audio for balanced sound delivery. Precision Sound Control: Equipped with a 7band equalization circuit offering a ±12dB control range. Frequencies covered include 60Hz, 150Hz, 400Hz, 1kHz, 3kHz, 6.5kHz, and 15kHz. Built with original TL074 components from TI or ST for enhanced audio fidelity. Headphone Compatibility: Utilizes an NE5532based Type 47 headphone driver circuit, capable of powering a wide range of headphones with ease. Adjustable and low settings deliver listening experiences. Practical Applications: 1. Upgrade the sound quality in your car audio system with finetuned control over bass, midrange, and treble output for all music genres. 2. Connect to your mobile device for hands calls while enjoying quality audio playback through your headset. 3. Ideal for audio enthusiasts seeking precision equalization control and reliable headphone performance in both vehicle and home sound setups.