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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Description

🎵 Compact power, colossal sound — own the road with Skar Audio!

ROBUST MOSFET TECH - Efficient Class D amplification ensures high power with minimal heat and energy loss.
SPACE SAVVY DESIGN - Ultra-compact footprint fits seamlessly into any car setup without sacrificing power.
POWERHOUSE PERFORMANCE - Delivers 140W x 4 channels RMS at 2Ω for crystal-clear, room-filling sound.
PRO GRADE CONNECTIVITY - Hi-level inputs and 8-gauge power terminals for reliable, professional-grade installation.
PRECISION SOUND CONTROL - Customizable HPF, LPF, and full-range crossover settings for tailored audio perfection.

The Skar Audio SK-M4004D is a compact yet mighty 4-channel Class D car amplifier delivering up to 400 watts of clean RMS power. Engineered with MOSFET technology and adjustable crossover controls, it offers precise sound customization in a sleek, space-saving design. Perfect for audiophiles seeking professional-grade performance and seamless integration in any vehicle.

Specifications

Item dimensions L x W x H	20.1 x 11.8 x 4.2 Centimeters
Voltage	14.4 Volts
Manufacturer	Skar Audio
Maximum Supply Voltage	14.4 Volts
Minimum Supply Voltage	14.4 Volts
Mounting Type	Surface Mount
Brand	Skar Audio
Number of Channels	4
Global Trade Identification Number	00739189979165
UPC	739189979165
Country of Origin	USA
Model number	SK-M4004D
Number of Memory Sticks	1
Item Weight	1 kg 700 g
Product Dimensions	20.07 x 11.79 x 4.19 cm; 1.7 kg
Item model number	SK-M4004D
Item Height	1.65 Inches
Item Width	4.64 Inches
Connectivity Technology	RCA
Output Wattage	400 Watts
Power Source	corded electric
Compatible Device	Amplifiers
Included Components	Skar Audio SK-M4004D Compact Full-Range Class D 4 Channel Amplifier
Are batteries included?	No

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