100W x 4 RMS output power Enjoy dynamic sound with an output power of 100W x 4 (330W x 2 bridged) RMS at 4 ohms / 165W x 4 RMS at 2 ohms. The highly efficient class-D amplifier provides a variety of speaker configurations to suit any car and impress any audio enthusiast. Powerful sound with astonishing clarity Sony's expertise and long years of engineering experience with digital amplifiers has made it possible to realize a compact and powerful amplifier, with uncompromising sound quality. Optimized power blocks The power supply block is optimally designed for low-noise, highly efficient electric power transmission, where the DC converter with a toroidal core transformer is chosen for less electro-magnetic interference. To reproduce delicate ultra-high-frequency sound, each channel block and the class-D amplification are all isolated with their own ground circuitry, minimising any signal interference. Select components for superior sound The upgraded inductors with OFC wires are selected for lower internal resistance and improved sound character, while the high-capacity electrolytic capacitors contribute to precise and responsive bass. Specifications: Amplifier Channel Configuration: 4-ch/3-ch/2-ch High Pass Filter: Variable (500–5 kHz) Low Pass Filter: Variable (50–500 Hz) Low-Pass Filter Slope: 12 dB/oct High Pass Filter Slope: 12 dB/oct CTA S/N: 77dB Signal to Noise Ratio: 100dB CTA Rated Output Power 4 ohms: 100 W x4 Details Gold Plated Connectors: Yes MOSFET: Yes (Power Supply) Speaker Level Input: Yes CTA Power output: 100 W x4 General Features Frequency Response: 10 Hz–40 kHz Tolerance: +0.5/-3 dB Total Harmonic Distortion at 1 kHz (%): Less than 0.05% Rated Output Power (14