Model 3100195 Quantity 1 Color Black Material Glass fiber Specification Power supply: 12V to 39V; Crosstalk: 70dB 1KHz; Total quiescent current: typical 40mA; Frequency response: 22Hz to 22KHz; Total input noise: Features A perfect "Class D" architecture; Adjustable four fixed gain settings: 25.6 dB 31.6 dB 35.1 dB and 37.6 dB; Line level audio signal input; External synchronization; Mounting holes facilitate installation and fixing; Several wiring methods facilitate connection; Excellent heat sink and powerful cooling fan eliminate your worry on heat dissipation; Over/under voltage turn off; Over current protection; Over temperature protection Application It is the ideal solution for any sound reinforcement installation or application needing an affordable compact PA system; Background Music Systems; Vending machines; Lifts; Interactive kiosks; Home DIY; Car audio English Manual/Spec YES Packing List 1 x Class-D Audio Amplifier Board TDA7498 1 x English user Manual