Will this pair well with model KMMBT31BU?

I am not a professional, but I have worked with home, car, and venue audio for over 25 years. I say they will make a great pair. If that head end has the features you want, then this little amp will give 100w max watts per channel over the 50w onboard. It can pump out a very reasonable volume level with plenty left over so that the sound doesn't get distorted. In fact, I wouldn't recommend getting anything more powerful unless you replace the speakers too.

Does it come with the harness pigtails?

Yes and the RCA cables. Pretty complete. You will need a y connector on the RCA input side if you want to bridge the amp.

Kacm1814 Compact 4 Channel Amplifie

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Description

🎶 Drive the sound revolution with Kenwood’s compact 4-channel amplifier!

EFFICIENT RELIABLE - Power MOS-FET switching supply ensures stable, energy-efficient amplification for long drives.
SEAMLESS SIGNAL SENSING - Smart speaker-level input with auto turn-on means zero hassle, just pure sound.
COMPACT DURABLE DESIGN - Space-saving surface mount with protective coating built for marine and motorsports environments.
POWER PACKED PERFORMANCE - Unleash crisp, high-fidelity sound with 400W max output—your ride’s new audio powerhouse.
CUSTOMIZABLE AUDIO CONTROL - High pass filter adjustable from 50Hz-200Hz lets you tailor your bass with precision.

The Kenwood KAC-M1814 is a compact, 4-channel digital amplifier delivering up to 400W max power with 2 Ohms load capability. Featuring speaker-level input with signal sensing turn-on, an adjustable high pass filter (50Hz-200Hz), and a durable surface mount design, it’s engineered for marine and motorsports use. Its efficient Power MOS-FET switching power supply ensures reliable, high-quality audio performance in a sleek, space-saving package.

Specifications

ASIN	B097DGV7FG
Brand	KENWOOD
Brand Name	KENWOOD
Customer Reviews	4.3 out of 5 stars 262 Reviews
Global Trade Identification Number	00019048226358, 00019048227133
Included Components	KENWOOD
Item Dimensions	21.6 x 7.6 x 17.8 Centimeters
Item Type Name	Kenwood KAC-M1814 4-Channel Compact Bridgeable Marine/Motorsports 400W Max Power Digital Amplifier
Item Weight	680 g
Item dimensions L x W x H	21.6 x 7.6 x 17.8 Centimeters
Manufacturer	KENWOOD
Material Type	Plastic, Protective Coating
Maximum Output Power	400 watts
Model Number	KACM1814
Mounting Type	Surface Mount
Number of Channels	4
Output Power	400 Watts
Package Type Name	Box
Part Number	KAC-M1814
Specification Met	CE, FCC
UPC	019048227133 019048226358
Unit Count	1.0 Count
Voltage	14.4 Volts

Reviews

A**I

ممتاز

1.03.2026

M**A

Kenwood amp

The sound is fantastic the best thing is the size it fit behind the head unit in the dash. Easy to install would recommend.

21.04.2026

F**.

Wird heiß

Wird krass heiß. Mal sehen wie lange der so hält. Ansonsten nichts zu bemängeln.

6.02.2026

J**N

Porsche Upgrade

Great quality amp that is a perfect upgrade for a Porsche Boxster 987 or 911 997 to replace the ASK amplifier if you have the SPP (Sound Package Plus). Buy this amp and a pair of RCA to wire cables and listen to a very cheap quality upgrade

6.05.2026

L**O

Kenwood KAC-M1814-ottima qualità

Qualità eccezionale, riscalda un po troppo, quindi consiglio di non installarlo in posto troppo chiuso

6.04.2026

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