Welcome to our shop! This passive volume control board features a three-way adjustment type, allowing you to adjust the treble, bass, and total volume. It is constructed with high-quality electronic components and precision processes, ensuring durability. No power supply is required, as it utilizes a heating stage front stage tuning board. The tone board can adjust the total volume, high voice, and low voice, making it suitable for effect boards and high-end stone machines with an attenuated passive tone board. Additionally, this board only changes the treble and bass, without affecting the original tone quality timbre. Specification: - Channel type: dual channel - Adjustment type: three-way (high + low + total volume) - Volume control: total volume control - High pitch adjustment: 10KHz (plus or minus 10db) - Residual noise: < 0.1mVac - Input resistance: 100kΩ - Output resistance: 600Ω - Audio input: 301-3P terminal - Audio output: 301-3P terminal - Installation size: 76mm (2*Dia.3mm) - Weight: Approx. 32g/1.1oz Package includes: - 1 x Passive volume control board 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.