Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Module _x005f_x000D_ Condition: New _x005f_x000D_ Compatible with audio and video equipment Style: amplifier, headphones and headsets, speakers _x005f_x000D_ Model: sound equalizer _x005f_x000D_ Model: EQ-7 _x005f_x000D_ Material: aluminum alloy _x005f_x000D_ Color: black _x005f_x000D_ Power supply: DC5V-12V _x005f_x000D_ Interface: DC5.5x2.1/3.5mm _x005f_x000D_ Input impedance: 20K _x005f_x000D_ Output impedance: 600Ω _x005f_x000D_ Equalization circuit control range: ±12dB _x005f_x000D_ Equalization frequency band: 60Hz, 150Hz, 400Hz, 1KHz, 3KHz, 6.5KHz, 15KHz _x005f_x000D_ Product size: 115.00x85.00x30.00mm _x005f_x000D_ Product size: 4.53x3.35x1.18inch _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x EQ-7  Audio Signal Preamplifier + Power Supply 1. Precise Control Range: Featuring a 7 band equalizer circuit with a control range of ±12dB, this audio signal preamplifier covers frequency bands of 60Hz, 150Hz, 400Hz, 1KHz, 3KHz, 6.5KHz, and 15KHz, utilizing original TI or ST TL074 components for superior performance. 2. Key Specifications: The 7 band equalizer preamplifier provides a gain of 14dB with classic 4580 op-amps, offering 5X amplification. It boasts an input impedance of 20K and an output impedance of 600Ω, making it a reliable phone computer headphone amplifier for various applications. 3. Headphone Compatibility: Equipped with a NE5532-based 47 headphone driver circuit, this audio signal headset amplifier can effortlessly drive various adjustable-height headphones, ensuring balanced and high-quality audio output. 4. Versatile 3.5mm Interface: The 3.5mm input interface supports 4-pole plugs, allowing for connection to headphones with microphones for normal voice calls on phones. Additionally, it includes RCA terminal interfaces, enhancing its versatility as a digital sound equalizer. 5. Durable Aluminum Alloy Construction: Made from high-strength, corrosion-resistant aluminum alloy, this 7 band equalizer operates with a stable performance on DC5V-12V power supply. It delivers dual-channel audio effects and is widely applicable in home/car audio systems, phones, computers, gaming consoles, and more.