Ultimate Car Audio by JBL.

JBL Concert Class AB Power Amplifiers are available in 2-Channel and 4-Channel models to bring superior and serious features with competitive price point. Both models have compact and elegant footprint, which are equipped with Adjustable High-Pass/Low-Pass Crossover Filter, Auto Turn on Facility, More importantly, they have reliable performance. 2-Channel amplifier can deliver 65 watts RMS of detail-enhancing musical power. If you only want power the bass, bridge the 2-Channel to 170 watt RMS. 4-Channel models will send 70 watts RMS to each of your front and rear speakers, the bridge model can power a pair of subwoofers with up to 180 watts RMS each.

General Specifications

• 4-channel AB car amplifier
• 70 watts RMS x 4 at 4 ohms 
• 90 watts RMS x 4 at 2 ohms 
• 180 watts RMS x 2 at 4ohms bridged
• Full/High-Pass/Low-Pass Filter : 40-400Hz, 12dB/octave
• SN Ratio (1W @ 4 ohms) : >75dB
• Frequency Response (-3dB):10Hz – 45kHz