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Focal FPS 4160

4-channel car amplifier — 120 watts RMS x 4

Outlet: Open Box

Item #: 091FPS4160

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2 Reviews | 1 question - 2 answers


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Focal Power Symmetric Amplifiers

Focal studied the interaction between speakers and amplifiers so that their FPS Series amps can make your speakers sound their absolute best. Focal makes no compromises when it comes to the design and internal components in their amplifiers, so you'll get reliable, high-fidelity reproduction for your music.

FPS 4160


The FPS 4160 4-channel amplifier sends 120 watts RMS per channel to your front and rear pairs of full-range speakers or components. You can use this versatile amp to power four 2-ohm subs with 200 watts RMS each, or switch to 2-channel mode and drive a pair of subs with 380 watts RMS each. You can even power your front speakers with two of the amp's channels while bridging the rear channels to drive a single sub. High-pass, low-pass, and band-pass filtering adjusts the output to match a wide variety of speakers, components, and sub combinations. And a wired remote level control for the rear cahannels give you even more control over your subs' performance.

Pure signal, superior sound

The dual power supply in the FPS 4160 uses a unique circuit design to ensure stable performance under any conditions. A heavy heatsink with a thermostat-controlled, progressive-speed fan keeps all the parts running cool. Focal's engineers stripped all signal paths of side-tracking circuits, so your music makes its way through the amp with maximum fidelity and minimum interference. Dynamic soft clipping allows an ultra-clean signal to pass to your subs while protecting them from destructive "clipped" distortion.

FPS High Cap

Plug-in capacitors

Optional High Cap outboard capacitor modules plug directly into the amp, smoothing out any power fluctuations caused by sudden system demands, so you enjoy consistent, superb sound quality. The FPS 4160 amplifier accepts two High Cap modules, one for each section of the dual power supply.

FPS 4160 rear panel

Product Highlights:

  • 4-channel car amplifier
  • 120 watts RMS x 4 at 4 ohms (200 watts RMS x 4 at 2 ohms)
  • 380 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • variable high- and low-pass filters (50-500 Hz or 500-5K Hz)
  • variable band-pass filter (50-500 Hz, 500-5K Hz)
  • Class-AB amplifier design
  • thermostat-controlled, progressive-speed cooling fan
  • remote level control (channels 3-4)
  • optional High Cap outboard capacitor modules increase power efficiency
  • frequency response: 10-52,000 Hz
  • preamp inputs
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • fuse rating: 40A x 2
  • 16-7/8"W x 2-3/8"H x 10-3/4"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.

Focal FPS 4160 Reviews

Average Customer Review:

2 Reviews

Focal 4160 amplifier

Written by: Nelson H from New Jersey on August 17, 2015

this the best amplifier i bidding to many amplifier before the is the best one



Focal does it again, Nicely done, Excellent!

Written by: F.A from Ottawa, ON on December 25, 2014

I consider my self a moderate audiophile, at home I only use IEMs. However, I'm a beginner at car audio, I have a 2002 W210 Mercedes E55 AMG which came with the crappy BOSE system. I installed Kenwood DNX 890HD HU, Focal P165 V15 in the front, Focal PC100 in the rear doors, a pair of Kicker 6.75 subwoofers in the rear deck ( I need the space in the trunk), and finally Dynamat Xtreme kit for the trunk and rear deck. I had a 4CH Clarion XR2420 amp, it produced 60W per channel. The bass was artificial, Treble was very very harsh and Vocals were lost in between.

****Now for the amp, I bought the Focal FPS 4160, Used 4-gauge wiring. My impressions are : -Design/Build quality:The amp is HUGE compared to most 4CH amps. You won't believe how sturdy/heavy the amp is. it also has a beautiful brushed finish to it, and the Focal logo illuminates :) - Loudness: This amp provides plenty of power, it powers 4 Focal speakers @ 2 ohm. and 2 Kicker subs, The amp keeps going and going without distortion. Amazing! -SQ: I used to think amps don't make a noticeable difference in SQ, guess I was wrong. I can hear details I never thought existed! The stage is Wide and clean, just like a theatre. The sound is natural, powerful and loud, very detailed, yet not overwhelming or fatiguing. Some say that Focal tweeters are harsh, with this amp The highs are smooth. The mids are more defined and pronounced, and the Bass is Clear, punchy and deep. To conclude, This could be the best decision I made!

Pros: -Sound quality :  -Power: more than enough power to power 4 speakers and 2 subs. -Design, Build quality. -Operating temperature: Cooling fins all around and integrated fan, runs surprisingly cool.

Cons: It might NOT be a con, but here goes: The amp is sensitive to gain setting. If you adjust too much you will introduce noise/hissing to the system, Recommend using a Multimeter and knowing your HU pre-out voltage.

Hands-on research

What's in the box?

Download owner's manual

  • 4-Channel amplifier (with two 40A Maxi fuses inserted in chassis)
  • 2 Spare 40A Maxi fuses
  • Bass Knob
  • 16' Remote cable (terminated by RJ-14 connectors)
  • 4 Long mounting screws
  • 2 Short mounting screws
  • 4 Flat-washers
  • 4 Lock-washers
  • Hex-key
  • User Manual (Eng/Fre)

Product Research



AB-Class Amplifier Design: The Focal FPS 4160 amplifier features an AB-class amplification design for excellent sound quality.

Symmetrical Design: The Focal FPS 4160 utilizes dual mono symmetric construction (PCB circuits in perfect mirror-image) that clearly increase the independent performance of each of the amplifier's channels, while improving the staging and the stereo disassociation.

Channel Design: The Focal FPS 4160 can be configured as a 4-channel, 3-channel, or 2-channel amplifier. The amplifier is stable down to 2-ohms in stereo, and 4-ohms when bridged.

CEA 2006 Compliant: The FPS 4160's power ratings are measured according to the strict standards dictated by the Consumer Electronics Association (CEA). These standards allow you to accurately compare the rated power output of all CEA 2006-compliant amplifiers, even if they come from different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging.

  • CEA 2006 Rating: 120 watts x 4-channel in 4-ohms @ 20 to 20,000 Hz with 1% THD+N

2-Ohm Stable: The amplifier is stable down to 2-ohms in stereo, and 4-ohms when bridged.

  • 2-Ohm Rating: 200 watts x 4-channel in 2-ohms @ 1kHz with 0.07% THD
  • Bridged (4-ohm): 380 watts x 2-channel in 4-ohms @ 1kHz with 0.08%

Soft-Clipping: The amplifier's dynamic soft clipping feature protects your connected speakers from distortion.

Controlled Cooling System: The Focal FPS 4160 utilizes a progressive controlled cooling system to regulate the amplifier's temperature by controlling air flow through an active fan and integrated cooling fins. Even before the thermo-regulated 3-1/8" low-noise cooling fan begins rotating at 122°F, the "T" shape of the amplifier's cooling fins permits 17% of active surface heat dissipation while guaranteeing extreme rigidity to the chassis.

Note: The cooling system only works when the amplifier temperature exceeds 122°F. The rotation speed of the cooling system depends on the amplifier's temperature.

Protection Circuitry: The Focal FPS 4160 amplifier employs the following protection circuits- short circuit, thermal overload, over voltage, polarity reversal.

LED Indicators: The green LED "Power" indicator means the amplifier is on and operating properly. The red LED "Protect" indicator  means that the amplifier has shut-down and is under protection.

Anti-vibration Feet: The Focal amplifier is equipped with four integrated damping rubber feet to resist vibration.

High-Cap Compatible (optional): The optional Focal High-Cap (091FPSCAP, sold separately) is an external power supply module. Once connected to the Focal amplifier, it increases the amplifier's power supply. The resulting benefit is a higher-fidelity audio signal from the Focal amplifier and overall better music performance, with enhanced dynamic behavior, improved speaker control and punchier bass.

Note: The FPS 4160 requires two Focal High-Caps.


Front-mounted Controls: The amplifier has controls conveniently mounted on the front panel.

Gain Control: You can adjust the level of the input signal for the front and rear channels of the amplifier independently. Range is 0.2 Volts to 5.0 Volts.

Fader Switch: A two-way switch for configuring the amp for two-channel or four-channel inputs. If you have a 4-channel input signal, you should push in the fader switch so you can fade from front to back using the head unit fader. If you have only a two-channel input signal, the switch should be in the Off position so all 4 channels of the amplifier can be fed with the 2-channel input signal, with no fading available.

Crossover Switch: This 3-way switch lets you select the crossover operation for the front and rear channels of the amplifier independently. You can choose from High-pass, Band-pass, or Low-Pass

Frequency: Using this rotary control, you can select a cutoff frequency (50-500 Hz or 500-5,000 Hz) for the front and rear crossovers. The crossovers have a slope of 12 dB/octave.

Direct Mode: You can defeat the crossovers for the amplifier's front and rear channels, so that the audio signal of the Focal FPS 4160 is directly amplified without any crossover adjustments.

Wired Bass Knob: The Focal FPS 4160 comes with a wired bass-level control knob. The bass-level is adjustable from -9 to +9 dB. The bass-level knob also features a mute button to completely attenuate the audio coming from the amplifier. The bass-level knob features integrated flanges and comes with two screws to mount the unit under the dash. It includes a 16' cable to connect to the amplifier.

Note: The wired remote measures 2.625" (w) x 1.0625 (h) x 2.4375" (d)


Front-mounted Terminals: The Focal FPS 4160 has all of the cable connections on the front of the amplifier for a clean installation.

Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals can accept up to 2-gauge wire, however, a 4-gauge wiring kit is sufficient for the 60-amp rating of the built-in fuse. The set screws can be tightened/loosened with the supplied Hex wrench.

Remote Turn-on: A set screw terminal for connecting the remote turn-on lead. The terminal will accept up to 10-gauge wire. The set screw can be tightened/loosened with the supplied Hex wrench.

Speaker Outputs: 4 pairs of set-screw terminals are provided for connecting speakers. The terminals can accept up to 8-gauge wire. The set screws can be tightened/loosened with the supplied Hex wrench.

Pseudo-Balanced Inputs: The amplifier is equipped with two pair of left & right gold-plated RCA jacks (front/rear) for the input signal from the head unit. These pseudo-balanced inputs help to reject ground noise.

Remote Control: An RJ-14 jack for connecting the supplied remote bass control module.

Maxi Fuses: The amp is equipped with two 40-amp Maxi fuses. Two spare fuses are included with the amplifier.

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 verify what’s in the box, 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.

Product reviews from the Crutchfield Labs

Video: Focal FPS amplifiers
by Zak Billmeier

For the best amplified sound in your car, turn to Focal. This brief video introduces the Focal FPS series of amplifiers.

What are the Labs?

Customer Q&A

1 question already asked

Hi Tim, my guess is he meant the front two channels would be driving a pair of 2-way component speakers (4 ohms), and the rear two channels would be driving a pair of subs (2 ohms), for a total of 6 speakers? If that is the case, I don't think the amp would have a problem. I can tell you what I'm doing with my set up, which is the front two channels are driving a pair of Focal 3-way components, and the rears are driving a pair of Rockford 8" subs. I'm EQ'ing the heck out of the rear subs, to produce a flat signal down to 25 HZ with ease, which takes a boat load of power, yet the amp is able to drive all 8 of my speakers with ease! This amp is amazing. We made custom midrange pods for the front speakers up in the sail window on the door. IMHO, you have to get the mids up high off the floor, for decent imaging and sound staging, not to mention having the critical clean midrange. [ Kevin  Sep 11, 2015 ]
I use it to drive 2 sets of the KRX2's 4 mid and 4 tweeter. I imagine you could run 1 set of KRX2's and maybe 2-8" subs if they were 2ohm subs. For me I went from a JL 900/5 to this and the biggest benefit was sound quality with a little more power. I had to buy a JL 700/1 for my sub. [ ryan  Sep 11, 2015 ]