Item# REF-551A
Infinity

Reference 551A

Details

Series of high-performance mono, 4-, and 5-channel amplifiers


Variations
$149.95149.95 each $199.95 Save $50
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Highlights

New Infinity Reference amplifiers deliver pure power from a slim, compact chassis that’s designed to fit in more vehicles. Available in 4-channel, 5-channel, and mono models, Reference amps incorporate our latest amplifier topology, include variable electronic crossovers and bass boost control for precise system tuning, and feature high- and low-level inputs for easy interface with virtually any system. They’re also compatible with several new vehicle technologies, including many advanced driver assistance systems, and Harman HALOsonic, a suite of acoustic solutions that can simulate engine sounds for a better driving experience in hybrids and electric cars, cancel road noise for better-sounding music, and more

Know What's In The Box

  • 1 amplifier
  • High-level input wiring harness
  • 2 spare fuses
  • 2 2-color brand stickers
  • Quick start guide

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Product Specs, Manuals, Compatibility & Features

Manuals & Downloads

The latest owner's manuals, quick start guides, and documents.

General Specifications

Signal-to-Noise Ratio
>xxdB (ref 1W output @ 4Ω)
Max Power
1300W Peak

System Specifications

Power Output, 2Ω
550W RMS x 1, <1.0% THD+N
Power Output, 4Ω
370W RMS x 1, <1.0% THD+N

Features

Compact footprint

Infinity Reference amplifiers are designed with a compact chassis and small footprint to ease installation, even if available space is limited.

High- and low-level inputs

Speaker-level and low-level inputs allow Reference amps to work with just about any car stereo, aftermarket or factory.

Variable crossovers and bass boost

Unlike many amplifiers available at similar prices, Reference amps feature variable electronic crossovers and bass boost circuit to allow for fine-tuning.

ADAS input with channel assignment

In vehicles with ADAS warning systems, you can assign a channel to broadcast system alert messages.

HALOsonic mixing input

Reference amps can also work with the HALOsonic systems of select vehicles, which helps reduce external noise for a better sonic experience.

Warranty 1 Year

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be eligible for exchange.

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