Whether you're building a component system, powering a pair of full-range speakers, or just pounding away with a subwoofer, there's an Infinity Reference series amp ready to take on the job. Boasting impressive power ratings and fine-tuned controls, these amplifiers are capable of sending your music to new sonic heights.

It's all thanks to high-output MOSFET power supplies — which ensure maximum power delivery to your speakers for efficient operation — and variable filters that let you contour the output to fit your music. And, since every Infinity Reference amplifier is CEA-2006 compliant, you'll know you'll get the power as advertised.

The Infinity Reference 7520a 2-channel amplifier is designed to work in a variety of applications. With 97 watts RMS in stereo mode, it can drive a pair of full-range or component speakers. Or, bridge the channels to mono and power a subwoofer with 283 watts of RMS power. The built-in bass boost juices your lows up to 12 dB at 50 Hz.

Product Highlights:

  • 97 watts RMS x 2 at 4 ohms
  • 142 watts RMS x 2 at 2 ohms
  • 283 watts RMS x 1 at 4 ohms in bridged mode (4-ohm stable in bridged mode)
  • stereo or bridged mono output
  • variable high-/low-pass filters (32-320 Hz, 12 dB/octave)
  • variable Bass EQ (0-12 dB @ 50 Hz)
  • CEA-2006 compliant
  • preamp outputs
  • preamp- and speaker-level inputs
  • fuse rating: 30A x 1
  • 8-gauge power and ground leads recommended — hardware and wiring not included with amplifier
  • 12-5/16"W x 2-11/16"H x 12-1/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Hands-on research

What's in the box?

Download owner's manual

  • 2-Channel amplifier with an installed 30A ATC fuse
  • One 11" speaker-level input harness
  • One 30A ATC fuse
  • 4 Self-tapping screws
  • 1 Silica gel packet
  • One 8" x 2-1/2" Infinity sticker
  • Instructions
  • Amplifier Quick Start Guide
  • Warranty card

Product Research

Features
Inputs and Outputs Notes

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 Filter: The internal filter can be set for low-pass, high-pass, or full-range operation. In the low-pass and high-pass modes, the filter 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, this amplifier has a 0 to 12 dB variable bass boost centered at 50 Hz.

Preamp Outputs: The preamp output jacks provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location. These outputs provide a full-range signal.

Inputs and Outputs Notes

Right Side of Amplifier:

  • +12V (power): 0.357" screw terminal
  • Remote: 0.357" screw terminal
  • GRD (ground): 0.357" screw terminal
  • Speakers: 0.357" screw terminals

Left Side of Amplifier:

  • High Level Input: 4-pin jack for use with supplied speaker-level input harness

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Infinity Reference 7520a Reviews

Average Customer Review:

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Oh yeah!

Written By John H, Juneau, AK on Monday, June 20, 2005

Replaced my 12 year-old Sony 100x2 amp that drives 2 Infinity 6x9's (also 12 years old) with this awsome amp. Needless to say I am buying new speakers now. This thing rocks! It's a great package although it was hard to find a discreet install location in an older Explorer since it was larger than I estimated. Check the dimensions first! It went under the back seat but I have to slide it forward to lower the seat. Oh well. Infinity products are superb.

fantastic

Written By Mike, stow ohio on Thursday, June 16, 2005

outstanding, this amp is pushing two 10's, given its not a monster amp but dollar for dollar it packs a punch. like any other infinity product you'll get every penny's worth of this amp. its quality through and through

Infinity Reference 7520a

Written By Erick, Sylmar, CA on Tuesday, June 07, 2005

This is a great amp. I have it powering a set of Infinity Reference 6000CS components. Perfect combination. My speakers sound great. Best bang for your buck.

Speak with Bill when purchasing

Written By Bret, Dothan, AL on Wednesday, May 18, 2005

I purchased this amplifier for my 1999 S10 Xtreme Standard Cab. I agree with the other review: this amp is a little large (dimensions-wise) for a standard cab truck, but I've got to say that I am pleased with it's performance. I'm powering it with a Clarion ARX6470. The amp is pushing two MTX Thunder 3000's. I also have Infinity Kappa 6.5"'s in the doors. After purchasing Infinity products for my wife's truck, then mine, I am a believer in Infinity's products. They'll give any other manufacturer a run for their money. The only complaint I have is that, per Crutchfield, my dash speakers are 5.25". This is incorrect: they are 4"x6". However, I can say that, because of Bill at Crutchfield, there are only two places in the country that I will purchase electronics. One is Crutchfield. Bill gave outstanding help when I needed it, and has made me a lifelong customer of Crutchfield! I will soon be in the market for dash speakers (Infinity Kappa's only), new subs (one Infinity perfect 10 should do the job), and eventually a new head unit (Clarion or Panasonic only), and because of Bill, they will all be from Crutchfield. I always say "I like what I like, and that's all that I like"... I like Crutchfield! Anyways, if you can find Infinity products (even if they're a little more money), purchase it-you won't be let down!!! Thank you.

Nice Amp

Written By Steve U, Roebuck, SC on Thursday, May 12, 2005

Crutchfield Customer Review (What's this?)

I'm using this Amp to power 2 Infinity 10's in a 93 Ford Ranger Super Cab. Don't let the 97 watts fool you. It pushes the 10's with no problems at all, even though they can handle twice the power. Very easy install, even for the 1st timer. If you're looking for a good amp that won't break you wallet, buy this one. It is a little on the big side, but it has great looks and the crossover and bass boost are great. I wish I could buy another one and bridge each one to the individual subs, but I don't have the space in my truck to do so. I don't need too, but wish I could. Friends can't believe the bass that comes out of my subs from this amp. Way to go Infinity!

Get everything you’ll need to enjoy your new Infinity Reference 7520a

Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Have your new amplifier put in by a qualified professional in your area.
EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

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