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Kenwood 640-Watt 4-Channel Amplifier (KAC8401)

by Kenwood

5.0 out of 5 stars See all reviews (1 customer review)

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Technical Details

Model: KAC8401

Product Details

Item Weight: 10 pounds
Shipping Weight: 10 pounds
Shipping: Currently, item can be shipped only within the U.S.
ASIN: B00009PR0W
Item model number: KAC8401

Average Customer Review: 5.0 out of 5 stars See all reviews (1 customer review)

Amazon Bestsellers Rank: #291,808 in Electronics (See Top 100 in Electronics)
Date first available at Amazon.com: May 15, 2003

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Product Description

The KAC-8401 is a multi-channel power amplifier that's powerful enough and versatile enough to run almost any speaker configuration. Power output is 60 watts x 4, 180 watts x 2 (bridged), with a maximum output rating of 640 watts. The power MOSFET switching power supply uses two large secondary capacitors and a large toroidal noise filter. Features include selectable +6dB bass boost (90Hz), variable low-pass and high-pass electronic crossovers for the A and B channels, 2-ohm stability, speaker level inputs, a Quiet Turn-On circuit, and a cast aluminum heat sink with sandblast finish.

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Customer Reviews

Average Customer Rating

5.0 out of 5 stars (1 customer review)

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Most Helpful Customer Reviews

5.0 out of 5 stars A great amp for small scale systems, May 30, 2006

By	A. Freedman (Bethesda, MD USA) - See all my reviews (REAL NAME)

This review is from: Kenwood 640-Watt 4-Channel Amplifier (KAC8401) (Electronics)

I purchased this amp to power up a dvd/video head unit. I wanted a small footprint amp that could provide decent power to four speakers (two component and two 6 1/2" speakers). I have had this amp installed and in use now for nearly a year.

The Good
Four channels of clean power
Decent footprint for a four channel amp of this power range
Does not generate that much heat (mounted under passenger seat)
Great installation instructions
Clean sound

The Bad
Nothing to say. A great amp should be invisible and trouble free. This amp fits the bill.

Recommendations
I recommend drawing power with an aftermarket harness that gives you a fused line directly to the battery.
This amp does not need a capacitor - wasted at this amperage
I installed it under the passenger seat. It required typical amount of effort to install (mounting and wiring effort).

Overall another great Kenwood component--I have had the best overall performance with Kenwood stuff. Alpine and Sony have been fairly good with a few weak products. Much better than the junk being put out there by pioneer, blaupunkt (who once was great) and the perennial also ran, Jenson.

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