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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Nobsound NS-03G SUB

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 peak power punch

📏Compact 2.7x1.3x3.54 inch design

🔊TPA3116D2 chip clarity

S$64

Duties & taxes included

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Description

🔊 Unleash deep bass power in a pocket-sized amp — because your sound deserves to be heard.

SLEEK SPACE SAVVY - Super mini size and solid shell fit effortlessly on your desktop or alongside your subwoofer without clutter.
SEAMLESS CONNECTIVITY - 3.5mm AUX input lets you plug in phones, TVs, or CD players instantly—no hassle, just pure sound.
POWERHOUSE PERFORMANCE - Delivers a robust 100W output to elevate your subwoofer’s bass experience with crystal-clear precision.
PRECISION VOLUME CONTROL - Smooth knob adjustment for fine-tuning your bass levels to match your vibe perfectly.
CUSTOMIZABLE POWER OPTIONS - Compatible with 12-24V power supplies (4A+ recommended) so you can choose the power source that suits your setup.

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. Its ultra-compact form factor and 3.5mm AUX input make it an ideal desktop companion for audiophiles seeking enhanced low-frequency sound without bulky equipment. Note: requires a separate 12-24V power supply (4A+).

Specifications

ASIN	B072KDNW3F
Best Sellers Rank	#60,435 in Electronics ( See Top 100 in Electronics ) #353 in Audio Component Amplifiers
Brand Name	Nobsound
Customer Reviews	4.0 out of 5 stars 873 Reviews
Item Dimensions	2.7 x 1.3 x 3.54 inches
Item Weight	0.2 Kilograms
Item dimensions L x W x H	2.7 x 1.3 x 3.54 inches
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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