---
product_id: 45551265
title: "Nobsound NS-03G SUB"
brand: "nobsound"
price: "HK$473"
currency: HKD
in_stock: null
reviews_count: 8
category: "Nobsound"
url: https://www.desertcart.hk/products/45551265-nobsound-ns-03g-sub
store_origin: HK
region: Hong Kong
---

# Compact 2.7x1.3x3.54 inch size 100W peak power output Smooth volume control knob Nobsound NS-03G SUB

**Brand:** nobsound
**Price:** HK$473
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Small amp, massive bass — own your sound space!

## Quick Answers

- **What is this?** Nobsound NS-03G SUB by nobsound
- **How much does it cost?** HK$473 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/45551265-nobsound-ns-03g-sub)

## Best For

- nobsound enthusiasts

## Why This Product

- Trusted nobsound brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful 100W Output:** Delivers deep, room-filling bass for your passive subwoofer without distortion.
- • **Ultra-Compact Design:** Fits seamlessly on your desktop or alongside your subwoofer, saving space without sacrificing power.
- • **Precision Volume Control:** Smooth knob lets you dial in the perfect bass level for any mood or setting.
- • **Customizable Power Supply:** Choose your ideal 12-24V, 4A+ power source to match your setup and maximize performance.
- • **Versatile 3.5mm AUX Input:** Effortlessly connect phones, TVs, or CD players for instant audio upgrades.

## Overview

The Nobsound 100W Subwoofer Digital Power Amplifier is a compact, high-performance mini amp designed exclusively for passive subwoofers. Featuring a TPA3116D2 chip, it delivers up to 100 watts of clean bass power through a smooth volume knob and versatile 3.5mm AUX input. Its sleek, solid shell fits perfectly on desktops or subwoofers, though it requires a separate 12-24V power supply (not included). Ideal for millennials seeking a powerful yet space-saving audio upgrade that commands attention in any room.

## Description

Buy Nobsound 100W Subwoofer Digital Power Amplifier Audio Mini Amp (Black): Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Well, it seems to be doing its job. - Well, because lying about it being 100 watts is a lie, it really isn't.At most there are 10 or 20, but that's how Chinese products are; they promise a lot. What I can say for sure is that it works well.The only downside is that they don't send you a connector to use it; I didn't have one.I had to take it apart in order to solder some wires. Because they don't send you a connector You pay $30 for this thing and they don't send a charger The interior looks like an amplifier I bought a while ago that had almost the same features; that one cost $15. I'd bet they use the same method, but they put it inside a small aluminum box, at least that makes it look nicer...
Review: Great little and powerful woofer amp - NOTE: This is for woofer speakers that are not amplified and where your main amp does not provide an amplified woofer channel. This amp is doing a great job with the woofer of my sound system! The clarity is awesome and the volume is more than we need for our room! The pricing was very affordable. A couple of things for buyers: This amp requires a separate power supply - the list clearly says this but, of course, I missed that. You can use your own power supply, but since this vendor has a cheap power supply that works, I ordered it and it was there the next day - great service! Easy to setup the amp and power supply (took like 2 minutes) and the bass sound is outstanding! For tech geeks only: the instructions and the website have one MINOR spec contradiction: The amp supports woofer speakers that are as low as 2 ohms and as high as 8 ohms of impedance. The instruction page that comes in the box says it only supports 4 ohms to 8 ohms of impedance, not 2. I talked to the firm and 2 ohms is the correct spec

## Features

- NS-03G is a sub power amplifier for passive subwoofer. Please note it is not compatible with active/powered subwoofers as well as normal speakers.
- It adopts TPA3116D2 chip and can offer 100W high power. With smooth volume control knob.
- Super mini size and solid shell. It can be easily placed on your desktop or your subwoofer.
- 3.5mm AUX input. You can connect various sound sources like phones, CD players, TV very easily.
- This one doesn’t include a power supply. You can choose our high quality 19V power supply (ASIN: B074J81XRB) or buy the power supply you like. Please choose good quality power supply. We recommend 12~24V, at least 4A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B072KDNW3F |
| Best Sellers Rank | #49,336 in Electronics ( See Top 100 in Electronics ) #290 in Audio Component Amplifiers |
| Brand Name | Nobsound |
| Customer Reviews | 4.0 out of 5 stars 861 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 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 |
| Specification Met | Industry Standards (Hifi) |
| Unit Count | 1 Count |
| Voltage | 25 Volts (DC) |

## Product Details

- **Item dimensions L x W x H:** 2.7 x 1.3 x 3.54 inches
- **Manufacturer:** Nobsound
- **Maximum Supply Voltage:** 25 Volts (DC)
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Voltage:** 25 Volts (DC)

## Images

![Nobsound NS-03G SUB - Image 1](https://m.media-amazon.com/images/I/71gJEu1KMJL.jpg)

## Questions & Answers

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

**Q: What is the input jack?  RCA?  3.5?**
A: 3.5.   I run rca into a 3.5 from my radio

**Q: 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?**
A: 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.

**Q: will this work with an input from a preamp?**
A: Not sure. I used input from a receiver and that worked.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well, it seems to be doing its job.
*by M***S on February 12, 2026*

Well, because lying about it being 100 watts is a lie, it really isn't.At most there are 10 or 20, but that's how Chinese products are; they promise a lot. What I can say for sure is that it works well.The only downside is that they don't send you a connector to use it; I didn't have one.I had to take it apart in order to solder some wires. Because they don't send you a connector You pay $30 for this thing and they don't send a charger The interior looks like an amplifier I bought a while ago that had almost the same features; that one cost $15. I'd bet they use the same method, but they put it inside a small aluminum box, at least that makes it look nicer...

### ⭐⭐⭐⭐⭐ Great little and powerful woofer amp
*by C***N on December 18, 2025*

NOTE: This is for woofer speakers that are not amplified and where your main amp does not provide an amplified woofer channel. This amp is doing a great job with the woofer of my sound system! The clarity is awesome and the volume is more than we need for our room! The pricing was very affordable. A couple of things for buyers: This amp requires a separate power supply - the list clearly says this but, of course, I missed that. You can use your own power supply, but since this vendor has a cheap power supply that works, I ordered it and it was there the next day - great service! Easy to setup the amp and power supply (took like 2 minutes) and the bass sound is outstanding! For tech geeks only: the instructions and the website have one MINOR spec contradiction: The amp supports woofer speakers that are as low as 2 ohms and as high as 8 ohms of impedance. The instruction page that comes in the box says it only supports 4 ohms to 8 ohms of impedance, not 2. I talked to the firm and 2 ohms is the correct spec

### ⭐⭐⭐⭐ Better than expected.
*by N***D on December 4, 2019*

I purchased this amp and the power supply recommended in the description to replace the PA amp that I had been using to power my home theater sub woofer. Considering the price and size of this amp, I had very low expectations. Upon connecting this little gem, I was amazed. This tiny little box delivers more than enough power to drive the sub. The volume control is smooth, with no noticeable pops, cracks or distortion which is common in an amp in this price range. The sound quality is better than I was expecting as well. Is this tiny little box comparable to an audiophile amp like the Marantz Mono-block amplifier? No, but the cost is also significantly less. For the price, this is an incredible value. It does exactly what it should and doesn't break the bank doing it. I can confidently recommend this amp to anyone looking for a decent product at a good price.

## Frequently Bought Together

- Nobsound 100W Subwoofer Digital Power Amplifier Audio Mini Amp (Black)
- Nobsound DC 19V 4.74A 90W Power Supply Power Adapter Charger Universal 100-240V 50/60Hz AC Input for Amplifier Laptop DAC
- RCA to 3.5mm Mono, 6ft 3.5mm 1/8 inch Mono Male Plug to RCA Male Audio Cable Adapter, for Speakers, Subwoofer

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-11*