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Does your power input too low to run your amplifier well? Do you want an audio amplifier board to make DIY creation on your bookshelf speakers? Why not try our Yeeco Audio Amplifier Board! 50W+50W digital power audio amplifier with booster chip, it can match your needs! Specification: Item name: Yeeco Audio Amplifier Board Input voltage: DC 12-24V Input impendance: 1k Output load: 4-8Ω Package: 1x audio amplifier board Feature: Dual channel power amplifier module with boost chip and step up to 24V output. 3.5mm Audio input convenient to connect with electronics. Ideal to DIY bookshelf loudspeaker, car audio components, home theater audio system.