Chat
Contact us
Close contact box
Connect ID #
428 626 897 4
Connect ID #
428 626 897 4
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

Infinity Reference 5761a 6-channel car amplifier
56 watts RMS x 4 + 107 watts RMS x 2

Item # 108R5761A

Infinity Reference amplifiers boast impressive power ratings and fine-tuned controls — ideal for sending your...

Find what Fits your vehicle

Remove

Checking fit...

Infinity Reference amplifiers boast impressive power ratings and fine-tuned controls — ideal for sending your...

Item # 108R5761A

Shop all Infinity Car Amplifiers

About the Infinity Reference 5761a

Ken Nail
Infinity Reference amplifiers boast impressive power ratings and fine-tuned controls — ideal for sending your music to new sonic heights.

Infinity Reference amplifiers boast impressive power ratings and fine-tuned controls — ideal for sending your music to new sonic heights.

When you want an amp that's truly versatile, it's hard to go wrong with the 6-channel Infinity Reference 5761a. Its 4-channel section (56 watts RMS per channel) drives all your full-range or component speakers, while two subwoofer channels (107 watts RMS x 2) take care of your low-frequency needs. You can operate this amp in 3-, 5-, or 6-channel mode, so this is one amp that you'll never outgrow.

You can contour the output to suit your speaker setup with the variable high- and low-pass filters. Kick up the bass output with Infinity's Variable Bass EQ when you need a little extra impact. Speaker- and preamp-level inputs ensure this amp integrates smoothly into your system.

READ LESS

Product highlights:

  • 6-channel amplifier
  • 56 watts RMS x 4 + 107 watts RMS x 2 at 4 ohms (80 watts RMS x 4 + 148 watts RMS x 2 at 2 ohms)
  • 56 watts RMS x 4 + 287 watts RMS x 1 in 5-channel mode
  • 148 watts RMS x 2 + 287 watts RMS x 1 in bridged mode
  • variable high-/low-pass filters on front and rear channels, low-pass only on sub channels (32-320 Hz, 12 dB/octave)
  • variable Bass EQ on sub channels only (0-12 dB @ 50 Hz)
  • CEA-2006 compliant
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • preamp- and speaker-level inputs
  • optional wired level control
  • fuse rating: 30A x 2
  • 21-1/8"W x 2-11/16"H x 12-3/16"D
  • warranty: 1 year
  • MFR # REFERENCE 5761A

What's in the box:

  • 6-Channel amplifier with two installed 30 Amp ATC fuses
  • Two 11" speaker-level input harnesses
  • Two 30 Extra amp ATC fuses
  • Four 1" Self-tapping screws
  • 1 Silica gel packet
  • One 8" x 2-1/2" Infinity sticker
  • Instructions
  • Quick Start Guide
  • Warranty card

Customer reviews for Infinity Reference 5761a

Loading reviews...

Average review:

5.0 out of 5 stars
11 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)

Reviewed on Samsung.com

This review was collected as part of a promotion

Pros:

Cons:

Crutchfield response
Customer provided image, click to load a larger version.
<< >>

More details on the Infinity Reference 5761a

Mark G.

Product Research

Features
Inputs and Outputs

Features

Status LEDs: The amplifier has the following status LEDs:

  • Clip: Indicates the amplifier is being overdriven, and your speakers may be in danger. This should blink only on musical peaks, and not be on constantly.
  • Power: Indicates the amplifier is on
  • Protect: Indicates any of the following problems: DC voltage on amplifier output, overheating, under voltage, over voltage, and short circuit in the speakers or wire

Variable Crossovers: The front, rear, and sub channels have separate crossovers. The front and rear channel filters can be set for low-pass, high-pass, or full-range operation. The sub channel filter is low-pass only and cannot be turned off. Each crossover can be adjusted from 32 to 320 Hz. In each case, the filter has a slope of 12 dB per octave.

Bass Boost: For added low frequency performance, the sub channels have a 0 to 12 dB variable bass boost centered at 50 Hz.

Sub Channel Input: The sub channels have a mode switch that can be set to one of the following options:

  • External Input: When sending a dedicated signal to the RCA subwoofer inputs
  • Internal Input: When using only the the front and rear inputs; this is useful if your receiver does not have dedicated subwoofer outputs

Remote Level Control Compatible: The optional 100rc wired remote level control (item number 108RC100) allows you to adjust the bass level from anywhere in the vehicle.

Inputs and Outputs

Right Side of Amplifier:

  • +12V (power): 0.334" screw terminal, accepts up to 4 gauge wire
  • Remote: 0.258" screw terminal, accepts up to 8 gauge wire
  • GRD (ground): 0.334" screw terminal, accepts up to 4 gauge wire
  • Speakers: 0.248" screw terminals, accepts up to 8 gauge wire

Left Side of Amplifier:

  • Line Level Inputs: Three pair of RCA inputs for front, rear, and subwoofer
  • Front High Level Input: 4-pin jack for use with supplied speaker-level input harness
  • Rear High Level Input: 4-pin jack for use with supplied speaker-level input harness
  • Remote Level Control: RJ-11 jack for use with the optional 100rc wired remote level control

Loading accessories...

Customer Q&A

Loading articles...

Compare the sound