Developed for those seeking high performance and sound fidelity in automotive amplifiers. The HL2000.4 is a 2000W RMS product with 4 CHANNELS OF 500W RMS at 2 Ohms and great installation versatility. It features independent resources on Front and Rear channels such as LEVEL to adjust the input signal level and Crossover, allowing you to choose between operating in LOW-PASS, HIGH-PASS, or FLAT (FULL-RANGE) modes. Digital amplifier with FULL RANGE response from 19 Hz to 25 KHz. TIPS ON HOW IT CAN BE INSTALLED: 16 super tweeters/drivers (horns) with 4 in parallel per channel. 2 channels in Bridge mode with 1000W at 4 Ohms (Front, Rear). 3 channels with two independent ones of 500W and one in Bridge mode with 1000W. In Tri-mode with a 4 Ohms speaker in bridge mode + 2 horns or 2 super tweeters per channel. Number of Channels: 4 RMS Power at 2 Ohms 12.6V: 4 x 500W RMS (STEREO) RMS Power at 4 Ohms 12.6V: 4 x 290W RMS (STEREO) RMS Power at 2 Ohms 13.8V: 4 x 580W RMS (STEREO) RMS Power at 4 Ohms 13.8V: 4 x 364W RMS (STEREO) Power @ 12.6V Bridge 4 Ohms: 2 x 1000W RMS Power @ 13.8V Bridge 4 Ohms: 2 x 1160W RMS Supply Voltage: 9 ~ 15V Frequency Response: 19Hz ~ 26KHz Low Pass Crossover: 90 Hz High Pass Crossover: 90 Hz Signal to Noise Ratio: 90 dB Harmonic Distortion: 0.4% THD Input Sensitivity: 0.2V Input Impedance: 15K OHMS Minimum Output Impedance: 2 OHMS (STEREO) / 4 OHMS (BRIDGE) Consumption with Musical Signal: 96A Consumption with Bass Signal: 192A Dimensions (H x W x L) mm: 66 x 206 x 241 mm Weight Kg: 2.23 Kg REQUIRED CABLES Power: 21 mm Remote cable: 0.75 mm Audio output: 8 mm Fuses or circuit breakers: 100A