Enhance your audio system with this high-performance Heavy Bass Preamp Filter Board, designed to deliver powerful low-frequency sound and improve bass playback quality. Crafted with precision, this filter board features a fully sealed adjustment potentiometer and pure copper terminals at the input and output ends, ensuring convenient wiring and reliable connections. Its compact and aesthetically pleasing design incorporates a well-organized wiring layout, resulting in an exceptionally high signal-to-noise ratio for clear, distortion-free sound. Key Features: · Fully Sealed Adjustment Potentiometer: Provides smooth and precise control with durable construction for long-lasting performance. · Pure Copper Terminals: Ensures excellent conductivity and easy wiring at both input and output ends. · Replaceable IC Holder: Allows easy soldering of different operational amplifiers to customize sound effects and enhance versatility. · LED Power Indicators: Real-time monitoring of power status for convenient operation and troubleshooting. · High Signal-to-Noise Ratio: Thoughtful circuit design minimizes noise, delivering clean audio output with strong anti-interference capability. · Strong Anti-Interference Performance: Virtually no noise near the speaker when no signal is input, ensuring pure sound quality. · Compact and Durable PCB: Made from super hardness FR-4 fiberglass material, measuring approximately 78 x 32mm with a thickness of 1.6mm, providing durability and stability. Specifications: · Condition: Brand new · Power Supply Voltage: DC 12V single power supply · Frequency Range: 22Hz–300Hz · Audio Input: Mono or dual channel · Audio Output: Mono · PCB Size: Approx. 78 x 32mm (3.1 x 1.3 inches) · PCB Thickness: 1.6mm · Plate Fixing Hole Center Spacing: 70 x 24mm · Hole Diameter: 3.2mm · Potentiometer Shaft Center Distance: 32.5mm · Weight: Approx. 32g (1.1oz) Package Includes: · 1 x Heavy Bass Preamp Filter Board · 2 x Screws · 2 x Gaskets · 2 x Knob Caps Please note, this filter board is designed specifically as a low-pass filter for enhancing bass frequencies and must be connected to a dedicated final stage power amplifier board to drive an active subwoofer. It filters out high-frequency sounds above the human voice range, focusing on low-frequency signals to deliver deep, impactful bass without interference from vocals or high-pitched instruments. The overall bass effect intensity depends on the power of the connected amplifier, allowing you to tailor the audio experience to your preference. Upgrade your audio setup with this reliable and easy-to-use bass preamp filter board, perfect for audiophiles and DIY enthusiasts seeking superior bass enhancement and noise-free sound reproduction.