Infinity Reference 4555A 5-Channel Amplifier

Infinity Reference 4555A 5-Channel Amplifier
(Infinity REF4555A)

We Think You Should Know

• 5-channel Class D Amplifier
• 45W x 4 + 320W - RMS 4Ohm
• 65W x 4 + 500W - RMS 2Ohm
• 130W x 2 bridged @ 4Ohm + 500W @ 2Ohm
• ADAS & HALO Sonic Inputs
• SNR: 85dB

Overview

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.

Performance
RMS Power Output (Watts x Channels)	45 x 4 320 x 1
Peak Power Output (Watts x Channels)	---
Power at 2 Ohms (Watts x Channels)	65 x 4
Bridged Power (Watts x Channels)	130 x 2
Minimum Impedance Bridged	4
Minimum Impedance Unbridged	2
Minimum Impedance	2
Best Frequency Response	10-40k Hz
THD at Rated RMS Power	1%
Signal to Noise Ratio	85 dB
Input Voltage	14.4v
Features
Amplifier Class	D
Low-Pass Crossover Frequency	32-320 Hz
Low-Pass Slope (dB/octave)	12 dB/octave
High-Pass Crossover Frequency	32-320 Hz
High-Pass Slope (dB/octave)	12 dB/octave
Bass Boost	0-9 dB
Bass Boost Frequency	45 Hz
Fan Cooled	No
Fuse Rating	90
Speaker Level Inputs	RCA
Preamp Outputs	No
Width (inches)	15-3/4
Height (inches)	2-1/4
Depth (inches)	7-3/8