Infinity's Reference 4555a 5-channel amplifier will add a lot of muscle to your music without breaking a sweat, and it'll look good doing it. This amp sends 45 watts RMS to each of the front and rear speakers in your car, while delivering up to 500 watts RMS to a subwoofer — a much better balance of "speaker-to-sub" power than most 5-channel amps provide. For a high-performance system, you can bridge the amp to 3-channel mode to power your front speakers with 130 watts RMS each, while still driving the sub with 500 watts.

Product Highlights:

• 5-channel car amplifier
• 45 watts RMS x 4 + 320 watts RMS x 1 at 4 ohms
• 65 watts RMS x 4 + 500 watts RMS x 1 at 2 ohms
• 130 watts RMS x 2 bridged at 4 ohms + 500 watts RMS x 1 at 2 ohms
• Class D amp technology
• variable high- and low-pass filters (32-320 Hz, 12 dB/octave) on front and rear channels
• low-pass filter (32-320 Hz, 12 dB/octave) on subwoofer channel
• bass boost on subwoofer channel (0-9 dB at 45 Hz)
• phase switch on subwoofer channel (0, 180 degrees)

More Features:

• preamp and speaker-level inputs
• ADAS and HALOsonic inputs for advanced integration in select vehicles
• fuse rating: 30A x 3
• 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
• 15-5/8"W x 2-1/4"H x 7-7/16"D
• warranty: 1 year