Soundstream PN2.350D 350W 2-Channel Picasso Nano Class D Amplifier Picasso Nano Series 2-Channel Class D Car Amplifier RMS Power Rating: 4 ohms: 115 watts x 2 chan. / 2 ohms: 175 watts x 2 chan. Max power output: 350 watts x 1 chan. Variable Bass Boost (0 to +12 dB bass boost at 45 Hz) & Variable low-pass filter (50-250 Hz, 24 dB/octave) Pulse Width Modulated MOSFET power supply