Feature Highlights: 1. 7-Band EQ Control – Adjust sound precisely with ±12dB control across 7 frequency bands: 60Hz, 150Hz, 400Hz, 1KHz, 3KHz, 6.5KHz, and 15KHz. Built with high-performance TI/TL074 chips for clear, customizable audio. 2. Strong Audio Boost – Features a classic 4580 op-amp that delivers 5X amplification (14dB gain). Input impedance is 20KΩ, output impedance is 600Ω, ensuring clean and powerful signal output. 3. Drives Various Headphones – Equipped with an NE5532-based balanced amplifier using the proven 47-circuit design. Easily powers most headphones with adjustable output levels. 4. Versatile 3.5mm Connections – Supports 4-pole plugs for input and output. Connect headsets with microphones for clear phone calls, plus additional terminal interfaces for flexible setups. 5. Durable Metal Build – Made from sturdy aluminum alloy, resistant to wear and stable in performance. Works with DC 5V–12V power, delivering dual-channel sound for home, car, mobile, computer, and gaming use. Product Details: This 2-channel audio equalizer gives you full control over your sound. With 7 adjustable frequency bands, it lets you fine-tune bass, mids, and treble to match your listening preference. The built-in preamp boosts weak signals, while the dedicated headphone amplifier drives even demanding headphones with ease. Made from robust aluminum alloy, it’s built to last and fits into a variety of setups—whether in your car, at your desk, or in your home audio system. The 3.5mm jacks support headsets with mics, so you can take calls without unplugging. Compact, user-friendly, and ready to enhance your audio experience. Specifications: - Color: Black - Material: Metal - Power Supply: DC 5V–12V - Channels: 2 - Package Includes: 2 x Headphone Amplifier Mixer Only the items listed above are included. Product color may vary slightly due to lighting and screen settings. Dimensions may have a tolerance of +/- 1–3cm.