I650.1- Precision Power Monoblock 650W RMS 1300W Max Class D iON Series Full Range Digital Stereo Bridgeable Amplifier. iON Series Monoblock Class D Car Amplifier. 4-way protection circuitry (thermal, overload, and speaker short protection).
The amplifier began to fail once installed, the bass sound is cut off, the part where the output is connected to the bass moves is broken inside, the part that makes contact is broken and that affects the operation of the amplifier.