Is it possible to buy replacement boards from the manufacturer? I dont need the housing.

Hello. We have boards for sale, sub version: https://www.amazon.com/dp/B07H337F4L?ref=myi_title_dp full frequency version: https://www.amazon.com/dp/B07H339BFP?ref=myi_title_dp

What is the input jack? RCA? 3.5?

3.5. I run rca into a 3.5 from my radio

Power on/off creates a loud annoying pop. I would like to shut the output with a capacitor to suppress the pop. What capacitor value and voltage?

I was very concerned with the very loud pop and found the only solution was to use: https://www.amazon.com/gp/product/B097T2YNB4/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1 I use this as the speaker cable and before shutting off the amplifier, I flip the switch on the speaker cable, disconnecting the speaker from the amp. It works perfectly.

will this work with an input from a preamp?

Not sure. I used input from a receiver and that worked.

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100W Subwoofer Digital Power Amplifier Audio Mini Amp (Black)

Product ID: 45551265

Details

Item dimensions L x W x H
2.7 x 1.3 x
Manufacturer
Nobsound
Maximum Supply Voltage
25 Volts (DC)
Minimum Supply Voltage
12 Volts (DC)
Voltage
25 Volts (DC)

⚡100W high power output

🔌3.5mm AUX input for versatile connectivity

🎚️Smooth volume control knob

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€ 44.21

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Description

🔊 Unleash deep bass vibes with compact power — don’t let your sound fall flat!

SEAMLESS SOUND CONTROL - Smooth volume knob lets you fine-tune your audio experience with precision and ease.
SLEEK COMPACT DESIGN - Super mini size with a solid shell fits effortlessly on your desktop or subwoofer, blending style with function.
CUSTOMIZABLE POWER OPTIONS - Choose your preferred 12-24V power supply (4A+) to match your setup and maximize performance.
PURE POWERHOUSE PERFORMANCE - Delivers a robust 100W output to supercharge your passive subwoofer with crystal-clear bass.
UNIVERSAL COMPATIBILITY PASSIVE ONLY - Easily connects to phones, TVs, and CD players via 3.5mm AUX input—just remember, designed exclusively for passive subwoofers.

The Nobsound 100W Subwoofer Digital Power Amplifier is a compact, high-performance mini amp designed exclusively for passive subwoofers. Powered by the efficient TPA3116D2 chip, it delivers crisp, powerful bass with smooth volume control. Featuring a 3.5mm AUX input, it easily connects to various audio sources. Its sleek, solid build fits perfectly on desktops or subwoofers, making it an ideal upgrade for audiophiles seeking rich low-end sound without bulky equipment. Note: requires a separate 12-24V, 4A+ power supply.

Specifications

ASIN	B072KDNW3F
Best Sellers Rank	#30,897 in Electronics ( See Top 100 in Electronics ) #165 in Audio Component Amplifiers
Brand Name	Nobsound
Customer Reviews	4.1 4.1 out of 5 stars (871)
Item Dimensions	2.7 x 1.3 x 3.54 inches
Item Weight	0.2 Kilograms
Manufacturer	Nobsound
Maximum Output Power	100W
Maximum Supply Voltage	25 Volts (DC)
Minimum Supply Voltage	12 Volts (DC)
Model	4330353845
Mounting Type	On Your Desktop
Number of Channels	1
Output Power	100 Watts
Part Number	SUB&FR
Specification Met	Industry Standards (Hifi)
Unit Count	1 Count
Voltage	25 Volts (DC)

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