Name: Infinity Reference 4555A Open Box (Complete)
Brand: Infinity
SKU: ls-ref4555a-obc10
Price: 349.95 USD
Availability: Discontinued
Rating: 4.8333 (6 reviews)

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Product highlights

• 45 Watts RMS x 4 + 320 Watts x 1 @ 4 ohm
• 65 Watts RMS x 2 + 500 Watts x 1 @ 2 ohm
• Total Peak Power: 1800 Watts
• Variable Bass Boost: 0 to +9 dB
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• Frequency Response: 32 - 320 Hz

Learn more about the ls-ref4555a-obc10

Description

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

General Features:

Infinity Reference Series REF-4555A 5-Channel Amplifier
RMS Power Rating:

4 ohm: 45 watts x 4 chan. + 320 watts x 1 chan.
2 ohm: 65 watts x 4 chan. + 500 watts x 1 chan.
1 ohm: ------------N/A------------
Bridged, 4 ohm: 130 watts x 2 chan. + 500 x 1 chan.

Total power output: 1800 watts
Pulse Width Modulated MOSFET power supply
LED power (green) and protect (red) indicators
Soft start turn-on
5/4/3/2 or Mono channel operation
High and Low level speaker inputs
3-way protection circuitry (thermal, overload, and speaker short protection)
Dual speaker terminals simplify the hookup of multiple speakers
Heavy duty aluminum alloy heat-sink for extreme heat dissipation
Slim and compact chassis provides more installation options
HALOsonic mixing input
Frequency Response: 32 - 320 Hz
Signal to Noise Ration: >80 dB
Total Harmonic Distortion (THD): <1.0%
Phase: 0 - 180°
Variable Bass Boost: 0 to +9 dB
Fuse Rating: 35 A x 3
4 - 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
Dimensions: 15-11/16"W x 7-5/16"D x 2-1/4"H
Authorized Internet Dealer
1-year Manufacturer's Warranty

What's Included

1 REF-4555A 5-Channel Amplifier
4 High-level input wiring harnesses
2 spare fuses
2 2-color brand stickers
Quick start guide

Product history:

	Infinity Reference 4555A Open Box (Complete) (newest, current model)
	Infinity Reference 5350a (previous model, replaced by Infinity Reference 4555A Open Box (Complete))

Specifications & Details

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

45 watts x 4 channel

RMS Power @ 2 ohms

65 watts x 4 channel

Bridged RMS Power

130 watts x 2 channel

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms

320 watts x 1 channel

RMS Power @ 2 ohms

500 watts x 1 channel

Amplifier Specifications

Series

Reference Series

Number of Channels

5-Channel

Total Peak Power Output

1800 watts

Total RMS Power Output

760 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

2 ohm

Minimum Impedance Bridged

4 ohms

THD at Rated RMS Power

<1%

Speaker Level Inputs

Yes - with included adapter

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)
Full (AP)

Signal-to-Noise Ratio

>80 dB

Bass Boost

0 - 9 dB

Fuse Rating

35A x 3

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

Infinity Reference 4555A Open Box (Complete) thumbnail image

Overall rating distribution

5 star		83%
4 star		17%
3 star		0%
2 star		0%
1 star		0%

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		5
Value		5
Features		4.8
Design		5
Usability		4.6

Customer Reviews

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small and solid

The following review is for REF-4555A, which is a part of the bundle you are viewing.

I have had many JBL and Infinity products in the past (amps,speakers,subs) and the quality is the same with this amp. This amp is nice and compact and is underrated,as far as power goes. It doesn't have a ton of features, but that's fine by me. I would recommend any JBL/Infinity product.

By Brian on April 11, 2018 Checkmark Icon

Verified purchase

4 found this helpful

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Awesome-always wanted this one!

The following review is for REF-4555A, which is a part of the bundle you are viewing.

The features and specs paint one picture of this amp and what it is capable of. When you open it up, it looks good (really good-discreet look), considered a paper weight until attached to the battery, radio, speakers. Then, and only then you realize the potential is realized. This amp over promises and over delivers. It has outstanding balance and very harmonious production value. Attached to 6x9 in rear deck for mids, 6x8 with cross-over with tweeters and two 12inch subs in an enclosed box. The sound is so clean (plain and simple). The ROI on purchase will over promise and over deliver.

By Get on the Bus with Gus on December 27, 2017 Checkmark Icon

Verified purchase

4 found this helpful

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Awesome Amplifier!

The following review is for REF-4555A, which is a part of the bundle you are viewing.

I went full Infinity reference Amp, speakers and subwoofer. System sounds awesome, not overkill. Very satisfied.

By Justin on March 30, 2018

2 found this helpful

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Attractive amp

The following review is for REF-4555A, which is a part of the bundle you are viewing.

Amp is very sturdy with a nice weight. I doubt it's pushing 500rms at the sub. I have it powering an infinity kappa 12 at 2 ohms. Seems like the sub is starving for power. But I will say I paired them with infinity reference 6.5 doors and 6x9s deck and they sound crispy clear. I sometimes turn the sub off just to hear them.

One thing I dislike is that a standard screwdriver can not secure the wires in the terminal. You need a slender screwdriver to reach the screws. I.had to use a glasses screwdriver, but you don't get much torque. Later I'll redo it. I have not touched the ammo while operating but I'm sure it's good. Haven't had any issues and I normally play loud.

By Kev on March 8, 2018

2 found this helpful

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Clean, Solid Power

The following review is for REF-4555A, which is a part of the bundle you are viewing.

Was a shame to mount this powerhouse out of view. Another GREAT product from Infinity, straight forward install quick adjustments a beautiful unit.

By Kevin on March 6, 2018

2 found this helpful

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The following review is for REF-4555A, which is a part of the bundle you are viewing.

By George on January 24, 2025 Checkmark Icon

Verified purchase

1 found this helpful

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Add-ons

Belva BAK46

Complete 6-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

(25)

$59.99

List price $89.99

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Infinity Reference 4555A Open Box (Complete)

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This item has been discontinued

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