6-Channel Car Amplifier with Digital Signal Processing from JBL! The JBL DSP Amplifier is an audio processor for fine-tuning of aftermarket audio systems. It is a self-contained audio system with 4-channel powered audio outputs and 2-channel preamp outputs, an easy-to-use tuning interface a novice can understand, and detailed tuning capabilities to satisfy even experienced installers. With a USB connection to access the tuning interface using a Windows PC, you can control fully variable crossovers, selectable 0-to-48 dB slopes, time delay, 31-band parametric or graphic EQ adjustment, assignable input-to-output mixer with input channel summing, channel gain, master volume control, clipping indicator to ensure the audio output is not distorted, and ability to save up to 10 presets. Specifications: RMS Power Output (Watts x Channel) @ 4-ohm: 25W x 4 RMS Power Output (Watts x Channel) @ 2-ohm: 35W x 4 Amplifier Class: Class A/B Battery Voltage Range (Volts): 8V to 16V Selectable Turn-on Modes: 12V, Audio Signal Sense, DC Offset, 12V remote output LED Indicator: red/green Frequency Response: 10Hz to 22kHz @ -3dB Signal-to-Noise Ratio: >80dB Signal-to-Noise Ratio (CEA-2006): 68dB THD+N @ 4-ohm: