Can u run 8 speakers on this?

Yes you can. Two speakers per channel in parallel but make sure that the impedence of each speaker is 4 ohms or more because the minimum impedence that this amp can work in a stable condition is 2 ohms. Also keep in mind that each speaker will get around 100-115 watts.

Can i hook up tweeters, two front 90w rms and two 45w rms speakers to this?

I have tweeters on mine with 2 6.5s running in HPF.

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Skar Audio SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W

Skar Audio SK-M4004D Compact Full-Range RMS Mosfet 4 Channel Car Amplifier, Class D, 400W

Product ID: 223932020

Details

Item dimensions L x W x H
20.1 x 11.8 x
Manufacturer
Skar Audio
Maximum Supply Voltage
14.4 Volts
Minimum Supply Voltage
14.4 Volts
Voltage
14.4 Volts

⚡400W max power output

📏Ultra-compact 7.9in x 4.6in x 1.7in

🎚️Adjustable HPF/LPF/Full-range crossover

RM3447

Duties & taxes included

In stock

Sold byAmazon MalaysiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎵 Compact power, colossal sound—unleash your car’s true audio potential!

PRO GRADE CONNECTIVITY - Robust 8-gauge power and ground terminals ensure stable, clean power delivery.
PLUG PLAY VERSATILITY - High-level inputs and adapter harness simplify installation—no RCA? No problem.
PRECISION SOUND CONTROL - Customizable crossover settings let you tailor audio from deep bass to crisp highs.
POWER PACKED YET POCKET SIZED - Delivers 140W x 4 channels RMS at 2Ω in a sleek, space-saving design.
BUILT TO LAST BUILT TO PROTECT - 4-way protection circuitry guards against thermal, voltage, speaker, and DC faults.

The Skar Audio SK-M4004D is a compact yet powerful Class D 4-channel car amplifier delivering up to 400 watts max output. Engineered with a high-speed MOSFET power supply and advanced 4-way protection circuitry, it offers reliable, distortion-free sound with flexible crossover controls and high-level input compatibility. Perfect for tight spaces without compromising on professional-grade audio performance.

Specifications

ASIN	B01EQX5ORK
Brand Name	Skar Audio
Customer Reviews	4.2 4.2 out of 5 stars (457)
Global Trade Identification Number	00739189979165
Included Components	Skar Audio SK-M4004D Compact Full-Range Class D 4 Channel Amplifier
Item Dimensions	20.1 x 11.8 x 4.2 Centimeters
Item Type Name	Car Amplifier
Item Weight	1.7 kg
Manufacturer	Skar Audio
Maximum Output Power	400 watts
Maximum Supply Voltage	14.4 Volts
Minimum Supply Voltage	14.4 Volts
Model Number	SK-M4004D
Mounting Type	Surface Mount
Number of Channels	4
Number of Items	1
Output Power	134 Watts
Part Number	SK-M4004D
Specification Met	CE
UPC	739189979165
Unit Count	1.0 Count
Voltage	14.4 Volts

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