Alpine S2-A36F S-Series 4-Channel Amplifier Enhance your car audio system with the Alpine S2-A36F, a high-performance 4-channel amplifier from the S-Series. Engineered with Class D technology and Hi-Res Audio certification, this compact amplifier delivers 360W total power for full-range audio, ideal for driving speakers. Key Features of the Alpine S2-A36F Class D Amplifier Circuit: Provides efficient power output with minimal heat. Hi-Res Audio Certified: Supports high-resolution audio for superior sound quality. Built-in Selectable/Adjustable Crossovers: Includes high-pass and low-pass filters (50-250 Hz). Two-Sided Terminal Layout: Simplifies wiring for front and rear connections. CEA-2006 Compliant: Ensures accurate power ratings. Specifications Table Specification Details Amplifier Type 4-Channel Amplifier Power Output (RMS) 45W x 4 @ 4Ω, 60W x 4 @ 2Ω Power Output (Max) 90W x 4 @ 4Ω, 120W x 4 @ 2Ω Frequency Response 10 Hz - 40 kHz (Hi-Res Certified) Signal-to-Noise Ratio 105 dB @ 4Ω Total Harmonic Distortion (THD) < 1% @ rated power Input Sensitivity 200mV - 4V (RCA), 600mV - 10V (High-Level) Crossover Frequencies High-Pass: 50-250 Hz (12 dB/Oct), Low-Pass: 50-250 Hz (12 dB/Oct) Damping Factor > 250 Operating Voltage 9V - 16V DC Idle Current 0.8A Maximum Current Draw 40A @ 2Ω Dimensions (W x H x D) 7.48" x 2.01" x 7.09" (190 x 51 x 180 mm) Weight 5.5 lbs (2.5 kg) Efficiency Not specified