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Focal AP 4340

Auditor Series 4-channel car amplifier — 70 watts RMS x 4

Item # 091AP4340

Whether you're talking about audio products for home, car, or studio, the name Focal always comes up when...

Whether you're talking about audio products for home, car, or studio, the name Focal always comes up when...

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About the Focal AP 4340

High-fidelity Class AB amp

Whether you're talking about audio products for home, car, or studio, the name Focal always comes up when the conversation centers around sound quality. Their Auditor Series AP 4340 4-channel amp makes a great candidate for powering any high-performance car audio system. This amp puts out 70 watts RMS per channel with very low distortion and very wide frequency response, so you can be sure your speakers or subs will sound their best.

High-fidelity Class AB amp

Whether you're talking about audio products for home, car, or studio, the name Focal always comes up when the conversation centers around sound quality. Their Auditor Series AP 4340 4-channel amp makes a great candidate for powering any high-performance car audio system. This amp puts out 70 watts RMS per channel with very low distortion and very wide frequency response, so you can be sure your speakers or subs will sound their best.

4-, 3-, or 2-channel operation

When you're using the AP 4340 to power four speakers, you can use the high-pass filters on the front and rear channels to eliminate the low bass for a cleaner sound. If you want to run full-range speakers and a sub, you'd use the high-pass filters on your front channels, then bridge the rear channels together to drive your sub, using the low-pass filter to optimize the bass.

In 2-channel mode, the AP 4340 puts out 190 watts RMS per channel, so you could use it to power a pair of high-performance speakers or subwoofers. A selectable bass boost lets you extend the low-frequency response.

Focal AP 4340

AP 4340 signal connection and control panel

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Product highlights:

  • 4-channel car amplifier
  • 70 watts RMS x 4 at 4 ohms (95 watts RMS x 4 at 2 ohms)
  • 190 watts RMS x 2 at 4 ohms (bridged mode)
  • CEA-2006 compliant
  • Class AB amp technology
  • channel 1-2: variable high-pass filter (60-1200 Hz)
  • channel 3-4: high-pass filter (100-2200 Hz) or low-pass filter (50-250 Hz)
  • channel 3-4: selectable bass boost (0, 6, 12 dB at 45 Hz)
  • preamp inputs and outputs
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • total harmonic distortion: 0.06%
  • frequency response: 10-30,000 Hz
  • fuse rating: 15A x 2
  • dimensions: 13-5/16"W x 2-3/16"H x 9-5/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # AP 4340

What's in the box:

  • 4-channel amplifier
  • Four 15A ATO fuses (2 installed in amp)
  • 4 Self-tapping screws (length=1-3/16")
  • 4 Plastic spacers (large)
  • 4 Plastic spacers (small)
  • 4 Flat washers
  • 4 Split lock washers
  • Amplifier User Manual
  • Focal brand card

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Focal AP 4340 reviews

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Features
Controls
Connections
Specifications

Features

CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. CEA-2006 standards allow consumers to compare amplifiers on an equal basis.

Amp Overview: The Focal AP-4340 is a full-range Class AB 4-channel amplifier. The amp can be configured for four-channel, three-channel, or two-channel operation. It has built-in crossovers that can be configured for high-pass or low-pass operation.

Power Output: The amplifier has the following power output:

  • 70 watts RMS x 4 at 4 ohms
  • 95 watts RMS x 4 at 2 ohms
  • 190 watts RMS x 2 at 4 ohms bridged

Protection Circuits: The amplifier is equipped with protection circuits for the following: short circuits, low impedance, DC output, thermal overload, reversed polarity, or over/under voltage.

Controls

Level Control (Gain): The Focal AP-4340 is equipped with line level inputs. There are separate rotary gain controls for the front (Channels 1&2) and rear (Channels 3&4) that can be adjusted by a standard flat-head screwdriver (not supplied). The low-level input sensitivity is 160mV (minimum).

Selectable Crossovers: The amp features high-quality crossovers that can be configured as Low-pass, High-pass, or Full Range. There are independent crossover controls for the front and rear channels:

  • Channels 1&2: The crossover for channels 1+2 can be set to full range or high-pass with a 2-way switch. It has a variable cutoff frequency from 60Hz to 1.2kHz.
  • Channels 3&4: The crossover for channels 3+4 can be set to full range, low-pass, or high-pass with a 3-way switch. In low-pass mode, the cutoff frequency varies from 50Hz to 250Hz. In the high-pass mode, you can set the cutoff frequency between 100Hz and 2.2kHz.

Bass Boost: The AP-4340 has a bass boost that can be set to 0dB (off), +6dB, or +12dB. No center frequency for the bass boost is given.

Connections

Screw Terminals: The amplifier is equipped with screw terminal strips for all speaker and power connections. A flat head or Phillips-head screwdriver (not supplied) can be used to tighten or loosen the screws. The sizes of the screw terminals are as follows:

Power/Ground: The screw terminals for connecting the power and ground cables are 0.475" wide. It is recommended that you use 8-gauge power and ground wire for this amp. A 0.335" wide screw terminal is provided for the turn-on lead (18-gauge wire is sufficient).

Fuses: The amp comes with two 15A ATO (blade) fuses installed in the amplifier, plus two spares. You should also install a 30A fuse on the power wire within 18" of the battery.

Speaker Outputs: The amp includes four pairs of 0.335" wide screw terminals for the speaker output. Markings are provided for bridged connections.

Signal Input: The amplifier features two pairs of stereo RCA inputs for connecting the input signal from the source unit to the amp via RCA cables. The amp will accept line-level signals only (minimum 160mV).

Signal Output: In addition to the 4-channel RCA inputs, the AP-4340 offers a stereo line output. This output is the same signal as the RCA input on Channels 1&2, and can be used to daisy-chain the signal to another amplifier.

Specifications

  • Full Range Mode Bandwidth: 10Hz - 30kHz
  • Total Harmonic Distortion: 0.06%
  • Channel Separation (1 kHz): 45dB
  • Signal-to-Noise Ratio (1W/1A): 76dBA
  • Dimensions: Width 13.3125" Height 2.155" Depth 9.254"
  • Weight: 6.06 pounds

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Because Cole said it was the best match for my setup! [ Michael  Jan 12, 2019 ]
A
I am interested in loud and clarity and quality. I think this will do what I need. This is for my fishing truck. [ Richard  Dec 03, 2018 ]
A
My new Focal speakers need 70/80W RMS and my head unit only puts out 22W [ CHARLES  May 05, 2018 ]
A
Brand name [ Neil  Mar 26, 2018 ]
A
RECOMMENDED [ KIM  Mar 21, 2018 ]
A
Made by focal, a high fidelity company at a cheap price that will match my tweeters exactly. [ Jahmel  Mar 20, 2018 ]
A
Focal reputation for quality, reasonable price for a 4 channel, 70 watt per channel amp with claimed low distortion. Replacing a more expensive Alpine unit that has a blown channel and didn't want to pay a lot since my car is getting pretty old. [ Bernard  Nov 27, 2017 ]
A
Wanted an amp to improve my Focal Speakers. [ Michael  Nov 01, 2017 ]
A
To complement my Focal speakers. [ Joseph  Jul 04, 2017 ]
A
To match with my Focal Speakers [ Anthony  Jun 21, 2017 ]
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6 questions already asked

Q
Where is it made?
[ Nathan  Jun 26, 2019 ]
2 answers
A
France
[ Jahmel  Jul 06, 2019 ]
A
Probably a question for Crutchfield. However, as I remember, Focal is a French company.
[ terrence  Jul 03, 2019 ]
Q
I have a pair ofPolk DB+ DB652 6-1/2" 2-way Speakers...will this amp do the job to power them up?
[ Juan  Mar 30, 2019 ]
1 answer
A
Thanks for your question. For information on selecting the best amp I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
[ Krissy  Apr 08, 2019 ]  Staff
Q
How many amps external fuse should I put for this amplifier 80 amps or 20 amps??
[ Mohammed  Mar 13, 2019 ]
5 answers
A
I only used the fuse that came with the amp and the fuse that came with the wiring kit. All good so far.
[ Ken Marion, IL  Mar 14, 2019 ]
A
20 amp fuse.
[ James  Mar 13, 2019 ]
A
I think I use 80 but I will check and send you another message but this amp is the real deal
[ jasper  Mar 13, 2019 ]
A
The amp comes with (2) 15 amp fuses, I would use a 30 amp fuse near the battery if this is your only amp your powering with that run.
[ Dan  Mar 13, 2019 ]
A
I ended up selling the amp and upgrading to an alpine amp with more power.
[ van  Mar 13, 2019 ]
Q
How many ampere fuse to install for this amplifier is 80 A fuse good?
[ Mohammed  Mar 13, 2019 ]
3 answers
A
unit comes with fuses. a 30 amp fuse in line is preferred over 80. the unt will cook before an 80 amp fuse blows. I threw the amp in the dumpster as it worked one time then blew a channel.
[ stephen  Mar 13, 2019 ]
A
The specs says what's the Amp rating. I used that info for the fuse. I believe it was 15, or25, but check. I know it wasn't 80 as my car is Prius and 80 is too high.
[ Tomas  Mar 13, 2019 ]
A
It only needs 30-40 Amp fuse
[ jayson  Mar 13, 2019 ]
Q
Can this power 1 set of ps165 v1 and 1 10â?? kicker comp subs?
[ Louie  Feb 02, 2018 ]
2 answers
A
It will power it but not to its full potential. Im not sure you can bridge 2 channels to 1 channel on this amp
[ jayson  Feb 02, 2018 ]
A
I don't see a Kicker comp 10a anywhere when I do a search but yeah if its around 150 watts RMS and you have the right ohm sub then it'd definitely power that whole system. I'm running it to power a set of JL Audio C-2 6.5" coaxials in the rear running at 4 ohms and a set of Focal K2 Power KRX2 165 components in the front running at 2 ohms and it powers them great. It gets so loud I can't even turn it up to 3/4 volume and leave it for very long. I was surprised at how well it does.
[ W  Feb 02, 2018 ]
Q
Why can't I hear the tweeters on my speakers? It's all bass
[ Robert  Jul 17, 2017 ]
1 answer
A
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings/connections on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer, or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/.
[ Kenny  Jul 17, 2017 ]  Staff
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