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SK-M4004D | 400 Watt 4-Channel Car Amplifier

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  • The Skar Audio SK-M4004D full range class D four channel amplifier is part of the new mini amplifier series product lineup from Skar Audio. The SK-M4004D was engineered to be compact, but provide the power and reliability expected out of larger amplifiers. Featuring a high speed MOSFET power supply, and an efficient Class D design, this amplifier is powerful, reliable, and extremely versatile.

    The SK-M4004D makes for a great amplifier in applications where space is limited but power cannot be sacrificed. In addition, this four channel amplifier features high level input connections for those installations that lack an RCA connection. In addition to the high level inputs, this amplifier also utilizes an adapter harness for the speaker outputs allowing for an easier installation.

    RMS Power @ 2 Ω 140W x 4 Ch (14.4v)
    RMS Power @ 4 Ω 100W x 4 Ch (14.4v)
    Power & Ground Input Size 8 Gauge
    Preamp (RCA) and Speaker Level Inputs Yes

    *Skar Audio always recommends professional installation for all of our products.*

    *Never mount amplifiers directly on the enclosure*

    • Compact "Mini" Class D Full-Range Four Channel Car Amplifier
    • The compact design of this amplifier series allows for maximum versatility
    • RMS Power at 2 Ohms: 140 Watts x 4 Channels (14.4v)
    • RMS Power at 4 Ohms: 100 Watts x 4 Channels (14.4v)
    • RMS Power at 4 Ohms (Bridged): 270 Watts x 2 Channels (14.4v)
    • Frequency Response: 10Hz - 40kHz
    • Working Voltage: 8.5V - 16V
    • Signal-to-Noise Ratio (Sensitivity): 85dB
    • Efficiency at 4 Ohms: 86%
    • Damping Factor: 100<
    • Low Level Input (Gain): 8V - 0.2mV
    • Hi-Level Input Connections: Yes
    • Speaker Output Adapter Connection: Yes
    • Crossover Control: HPF / Full-Range / LPF
    • 4-Way Protection Circuitry Built-in (Thermal, Voltage, Speaker, DC)
    • LED Power & Protection Indicators
    • Fuse Rating: 40 Amps
    • 8 Gauge Power and Ground Input Terminals
    • Dimensions: 7.9" (Length) x 4.6" (Width) x 1.7" (Height)

    Channel 1/2 Crossover

    • High-Pass Filter / Full-Range / Low-Pass Filter
    • Variable Crossover Frequency Range: 50Hz - 500Hz

    Channel 3/4 Crossover

    • High-Pass Filter / Full-Range / Low-Pass Filter
    • Variable Crossover Frequency Range: 50Hz - 500Hz

    Click Here to Download the SK-M Amplifier Manual

  • Product videos coming soon..

Customer Reviews

Based on 227 reviews
89%
(202)
5%
(12)
6%
(13)
0%
(0)
0%
(0)
J
Justin Bianchini
Fan does not turn off on mine

However this amp works perfectly fine the fan just doesn’t turn off and is very loud once again however I reached out to Skar Audio they were going to replace it no problem but the problem I did have as I had everything professionally installed so they throughout the original packaging so I couldn’t send it back Think I’m gonna upgrade two 800 W four channel anyway

J
Jeffrey Himes
Recent order

I sent a response before concerning my shipment. I love your brand, been here since the beggining. I have my whole system as skar audio in my 2017 mustang. But this last amp was not so great condition... scratched up pretty bad.

D
David Davis
Doin it Nasty style

Amps work great and if you do have a problem skar will take care of you that's a fact

A
Alex Montero
Sounds great

Amp is small and compact but sounds crisp clear

T
Techghoul
Which one is it?

Just received 5/12/2021 and was reading owner's manual. The manual states:

Power @ 4 ohms 80w x 4
Power @ 2 ohms 134 x 4

Not the 100 watts rms @ 4ohms x 4 and 140 watts at 2 ohms x 4
So which one is it?

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