Features: Professional sound signal processing can effectively interfere with sound, current, and noise, improving the purities and quality of sound signal. The headphones speaker interferences canceller is designing specifically for headphones and speaker to eliminate interferences and make sound output clear. The elimination of sound, current, and noise, through professional technical processing, effectively reduces the effect of sound, and current, and noise on performances. Use advanced filtering technology to filter out excess noise, making sound cleaner. 60Hz noise elimination, eliminating buzzing noise, safely grounding to break the grounding cycle, and maintaining the highest sound quality. Specifications: Color: Black Package Includes: 1x Noise Canceller note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.