Will this power up passive subwoofers ?

Yes, absolutely. That's the reason I bought it and it works just fine without spending a whole lot of money.

How hot does this amp run? The unit I currently use is very hot to the touch even after a short while.

This thing seems cool no issues

What is the input voltage range?

Not sure what your question is about. If you mean input power, it's spec'd. at 12-24 vdc. It comes with a power brick rated at 19 vdc, 4.47 amps. Input sensitivity is =< 280 mv...

I have a Harman Kardon reciver with a single rca sub connection. What cables do i need to hook my sub to this amp and the amp to my reciever

You need 1/8 audio plug to RCA adapter ..

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Power Amp 300W

Q: I have a Harman Kardon reciver with a single rca sub connection. What cables do i need to hook my sub to this amp and the amp to my reciever

You need 1/8 audio plug to RCA adapter ..

Product ID: 512342655

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Details

Item dimensions L x W x H
5 x 5 x 1
Voltage
24 Volts (DC)
Manufacturer
Fosi Audio
Maximum Supply Voltage
32 Volts (DC)
Minimum Supply Voltage
24 Volts (DC)

🎶High-Performance Chip

📏Mini Compact Design

🔊300W Power Output

Description

🎉 Power Up Your Sound Experience!

UNLEASH THE POWER - Experience a booming 300W output that transforms your audio experience.
COMPACT YET MIGHTY - Designed to fit seamlessly into any space without sacrificing performance.
VERSATILE CONNECTIVITY - Easily connect passive or powered subwoofers with banana plugs or RCA cables.
ELEVATE YOUR SOUND SYSTEM - Perfect for audiophiles seeking to enhance their home audio setup.
HIGH PERFORMANCE ENGINEERING - Equipped with the Sicroelectronics TDA7498E chip for superior sound quality.

The Fosi AudioPower Amp 300W is a mini compact Class D audio amplifier that delivers a maximum power output of 300 watts. It features the high-performance Sicroelectronics TDA7498E chip, allowing for versatile connections to both passive and powered subwoofers, making it an ideal choice for enhancing your audio setup.

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