About the Infinity Reference 7520a

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
- MFR # Reference 7520a
What's in the box:
Infinity Reference 7520a 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
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More details on the Infinity Reference 7520a

Features & specs
Performance | ||
---|---|---|
RMS Power Output (Watts x Channels) |
97 x 2 | |
Peak Power Output (Watts x Channels) | N/A | |
Power at 2 Ohms (Watts x Channels) | 142 x 2 | |
Bridged Power (Watts x Channels) | 283 x 1 | |
Minimum Impedance Bridged | 4 | |
Minimum Impedance Unbridged | 2 | |
Minimum Impedance | 2 | |
Best Frequency Response | 10-69k Hz | |
THD at Rated RMS Power | 1% | |
Signal to Noise Ratio | 83 dB | |
Input Voltage | 14.4v | |
Features | ||
Amplifier Class | AB | |
Low-Pass Crossover Frequency | 32-320 Hz | |
Low-Pass Slope (dB/octave) | 12 dB | |
High-Pass Crossover Frequency | 32-320 Hz | |
High-Pass Slope (dB/octave) | 12 dB | |
Bass Boost | 0-12 dB | |
Bass Boost Frequency | 50 Hz | |
Fan Cooled | No | |
Fuse Rating | 30 x 1 | |
Speaker Level Inputs | --- | |
Preamp Outputs | 1 pair | |
Width (inches) | 13-1/2 | |
Height (inches) | 2-11/16 | |
Depth (inches) | 12-1/8 | |
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year |
Product Research
Features
Inputs and Outputs Notes
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.
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
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Customer Q&A
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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.
Erick from Sylmar, CA