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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Fosi Audio M01-BT Bluetooth 5.0 300 Watt Subwoofer Amplifier Home Theater Full-Frequency Mini Stereo Audio Hi-Fi Mono Power Amp with Bass Gain Control for Passive Subwoofer Speaker Bass Shaker

Fosi Audio M01-BT Bluetooth 5.0 300 Watt Subwoofer Amplifier Home Theater Full-Frequency Mini Stereo Audio Hi-Fi Mono Power Amp with Bass Gain Control for Passive Subwoofer Speaker Bass Shaker

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: 439695414

Details

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

📶Bluetooth 5.0 wireless connectivity

🔊300W max power output

🎚️Adjustable bass gain control

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฿10045

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎵 Small amp, massive vibes — unleash your bass beast!

COMPACT YET MIGHTY - Sleek 5x5 inch design packs high-performance STMicroelectronics TDA7498E chip, fitting premium sound into any space.
PRECISION BASS CONTROL - Fine-tune your low-end with dedicated bass gain control to match your room and mood perfectly.
VERSATILE INPUT OPTIONS - Supports both Bluetooth and RCA inputs, compatible with passive and powered subwoofers for ultimate flexibility.
POWERHOUSE IN A MINI FRAME - Delivers a robust 300W output to energize your subwoofer with crystal-clear, deep bass.
SEAMLESS BLUETOOTH 5 0 STREAMING - Wirelessly connect your devices with ultra-stable, low-latency Bluetooth 5.0 for effortless audio freedom.

The Fosi Audio M01-BT is a compact yet powerful 300W Class D subwoofer amplifier featuring Bluetooth 5.0 for wireless connectivity, RCA inputs for versatile compatibility, and precise bass gain control. Designed to drive passive and powered subwoofers, it integrates the high-performance TDA7498E chip to deliver clean, tight bass in a sleek, space-saving form factor—perfect for upgrading any home theater or audio setup.

Specifications

ASIN	B09YLMGPY2
Best Sellers Rank	#72,005 in Electronics ( See Top 100 in Electronics ) #425 in Audio Component Amplifiers
Brand Name	Fosi Audio
Customer Reviews	4.5 4.5 out of 5 stars (187)
Item Dimensions	5 x 5 x 1 inches
Manufacturer	Fosi Audio
Maximum Output Power	300 watts
Maximum Supply Voltage	32 Volts (DC)
Minimum Supply Voltage	24 Volts (DC)
Model	M01-BT
Mounting Type	Freestanding
Number of Channels	1
Output Power	300 Watts
Package Type Name	box
Part Number	M03
Specification Met	FCC
Supply Current	4.5 Amps
Unit Count	1.0 Count
Voltage	24 Volts (DC)

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