Check the listing for details. Nessa TD49 4Ch & TD100 Mono Amplifier Car Audio Speaker/subwoofer Amp Package. Condition: New. Listed at 381.99 USD. "Unleash the Power of Your Car's Audio System: NESSA TD-100 3000W 4-Channel Micro Amplifier + TD-49 3000W 4-Channel Micro Amplifier with 3 2-channel RCA Interconnect Cables Package. Experience enhanced audio performance and power with these high-quality amplifiers. Upgrade your car's audio system and enjoy a powerful and immersive sound experience. Elevate Your Driving Experience Today!"NESSA TD-100 3000W Monoblock Micro Amplifier Class D Digital Mono Block Amplifier. Full MOSFET PWM Power Supply SMD Technology on Double Sided PCB. 8ga Power & 8ga Speaker Output Terminals High & Low Level Signal Inputs. Remote Mount Gain Control Included. Variable 35-250Hz 12dB Low Pass Filter Variable 10-50Hz 12dB Subsonic Filter Variable 0-12 dB 45Hz Bass Boost. 500W x 1 @ 4-ohm Mono. 1000W x 1 @ 2-ohm Mono. 2000W x 1 @ 1-ohm Total Harmonic Distortion: 0.5%. Frequency Response: 20-150 kHz. Signal-to- Noise Ratio: 70dB Damping Factor: > 250 Input Sensitivity: 200mV-6V Dimension: 10.2” x 4.75”W x 1.5”H TD-49 3000W 4-Channel Micro Amplifier Class D Digital Full Range Amplifier Full MOSFET PWM Power Supply SMD Technology on Double Sided PCB. 8ga Power Terminals & 12ga Speaker Outputs High & Low Level Signal Inputs Selectable 80Hz 12dB High/Low Pass Filter 2-Ohm Stereo, 4-Ohm Bridged Stable 160w x 4 @ 4-ohm Stereo 250w x 4 @ 2-ohm Stereo 500w x 2 @ 4-ohm bridged Total Harmonic Distortion: 0.5%. Frequency Response: 10-35 kHz. Signal-to- Noise Ratio: 70dB Damping Factor: > 250 Stereo Channel Separation: < 55dB Input Sensitivity: 200mV-6V Dimension: 4.75”w x 1.5”h x 9”l 3- 2 channel RCA Interconnect cable Included 17ft length