---
product_id: 174949513
title: "Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W"
brand: "douk audio"
price: "779 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Douk Audio"
url: https://www.desertcart.dk/products/174949513-douk-audio-g4-subwoofer-full-frequency-mono-channel-digital-power
store_origin: DK
region: Denmark
---

# 100W peak power output 3.5mm AUX & RCA inputs B/M switch for subwoofer/full-frequency mode Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W

**Brand:** douk audio
**Price:** 779 kr
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your sound game with the compact powerhouse that’s got your bass covered!

## Quick Answers

- **What is this?** Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W by douk audio
- **How much does it cost?** 779 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/174949513-douk-audio-g4-subwoofer-full-frequency-mono-channel-digital-power)

## Best For

- douk audio enthusiasts

## Why This Product

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

## Key Features

- • **Powerful 100W Output:** Drive passive 3-10 inch full-frequency or 4-12 inch subwoofer speakers with crystal-clear sound and zero audible noise.
- • **Stereo Expansion Ready:** Use two G4 units to independently power left and right channels, eliminating interference and upgrading your system to immersive 2.1 sound.
- • **Compact & Durable Design:** Sleek aluminum chassis fits perfectly on your desk or home HiFi setup, combining style with long-lasting durability.
- • **Dual Input Compatibility:** Supports both 3.5mm AUX and RCA inputs, ensuring effortless connection with all your favorite audio devices.
- • **Versatile B/M Mode Switch:** Seamlessly toggle between subwoofer (20-200Hz) and full-frequency (20Hz-20kHz) modes to tailor your audio experience.

## Overview

The Douk Audio G4 is a compact, mono digital power amplifier delivering 100W output, designed for both full-frequency and subwoofer applications. Featuring a B/M mode switch, dual AUX and RCA inputs, and a durable aluminum build, it upgrades your audio system with clean, powerful sound and flexible connectivity. Ideal for HiFi enthusiasts seeking a sleek, efficient amp to enhance their home or desktop audio experience.

## Description

desertcart.com: Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W : Electronics

Review: This little amp worked out great and sounds amazing. - I am very happy with the subwoofer amp. I had to replace my A/V receiver with one that did not have an internal subwoofer amp, and this little amp fit the bill. It works exactly like it did with my previous receiver. If you have passive woofers and your receiver does not have an internal amp for subwoofer output then I highly recommend this little amp. It comes with a crossover switch on the back (B & M). B position is for Subwoofer Mode ( 20 -200hz) M position is for full frequency (20 - 20khz).
Review: Wow! Really good unit! - Just received after my old power subwoofer amp seemed to put out less bass, thought I'd revive it with a new amp instead of fixing a 20 year old amp. Everything is included (amp, power supply) and all you need to do is use your own speaker wire and hook it up to your subwoofer. In my case I tested the amp with my old car subwoofer and wow...works really good! At first I was a bit disappointed at full max BUT it was because I had the wrong settings, fortunately the instructions provided were helpful. From the factory it comes in setting "M" which is for full range speakers. After I switched the mode to "B", wow, I had to turn down my volume! Pretty legit and nice unit I have here. We'll see on the durability and longevity of this unit as its only been about 2 hrs. Will update as time goes on.

## Features

- G4 can be used as full frequency amp or subwoofer amp with the B/M switch to connect different speakers, and with 3.5mm AUX and RCA input to compatible with different audio devices. 2PCS G4 can be used to drive left and right channel independently to avoid mutual interference.
- Adopting 2PCS NE5532 op-amp and TI's TPA3116 chip, output power up to 100W enough to drive passive 3-10 inch full-frequency speakers or 4-12 inch subwoofers, no audible noise even at large power output, upgrade your 2.0 channel audio system to 2.1, providing shocking cinema effects.
- By combining the stereo(left and right channel) input, first to do signal analysis and frequency processing and then power amplification, the low-frequency filtering will be more pure and power consumption is more efficient.
- Mini size with exquisite appearance: mono integrated class D amplifier, simple compact design but with powerful function, more fashionable and durable solid aluminum chassis, very suitable for HiFi home and desktop audio system use.
- Notice: this is mono amplifier, if you want stereo output please buy 2PCS or 3PCS.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081Q3VZ9V |
| Best Sellers Rank | #71,923 in Electronics ( See Top 100 in Electronics ) #438 in Audio Component Amplifiers |
| Brand | Douk Audio |
| Customer Reviews | 4.1 4.1 out of 5 stars (175) |
| Date First Available | November 19, 2019 |
| Item Weight | 8.5 ounces |
| Item model number | DZ078_US |
| Manufacturer | Douk Audio |
| Material | Aluminum |
| Maximum Supply Voltage | 24 Volts (DC) |
| Minimum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Output Power | 100 Watts |
| Package Dimensions | 7.76 x 7.05 x 2.24 inches |
| Package Type Name | Box |
| Supply Current | 4.74 Amps |
| Voltage | 12 Volts (DC) |

## Product Details

- **Manufacturer:** Douk Audio
- **Maximum Supply Voltage:** 24 Volts (DC)
- **Minimum Supply Voltage:** 12 Volts (DC)
- **Mounting Type:** Surface Mount
- **Voltage:** 12 Volts (DC)

## Images

![Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W - Image 1](https://m.media-amazon.com/images/I/51VANpJLHiS.jpg)

## Questions & Answers

**Q: Can anybody tell me definitively--no guessing please--that the aux input is stereo? Is it only inputting one channel (left or right), or summing them?**
A: The system is just giving you a mono signal the subwoofer output on your receiver is just a mono signal unless you have a right and left output. I have never heard of right and left output before for a subwoofer, but I guess there is always a possibility.

**Q: Is this a good choice for a center channel speaker?**
A: It may work for you, depending on your speaker, the amp on other speakers, the other speakers, your set up (assuming you have something to feed a distinct center channel) and your room.  I wouldn't.  How many volume controls do you want to get up and mess with?  If you're trying for a home theater setup, you'll be happier with Amazon's entry level Onkyo 5.2 system at $329.  Use the speakers you have and upgrade as you can afford.  On the other hand if this is a dorm room, go for it.

**Q: I have a powered subwoofer but need to combine left and right channels with a cross. will this conflict with my powered sub?**
A: probably not a good fit with a powered sub unless you are replacing the amp in that sub.

**Q: can it handle a 12 inch sub 200watts?**
A: It can drive the speaker, but how well will depend on the efficiency of the speaker and not just the size and watts it can handle.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This little amp worked out great and sounds amazing.
*by F***O on January 29, 2025*

I am very happy with the subwoofer amp. I had to replace my A/V receiver with one that did not have an internal subwoofer amp, and this little amp fit the bill. It works exactly like it did with my previous receiver. If you have passive woofers and your receiver does not have an internal amp for subwoofer output then I highly recommend this little amp. It comes with a crossover switch on the back (B & M). B position is for Subwoofer Mode ( 20 -200hz) M position is for full frequency (20 - 20khz).

### ⭐⭐⭐⭐⭐ Wow! Really good unit!
*by T***N on December 2, 2020*

Just received after my old power subwoofer amp seemed to put out less bass, thought I'd revive it with a new amp instead of fixing a 20 year old amp. Everything is included (amp, power supply) and all you need to do is use your own speaker wire and hook it up to your subwoofer. In my case I tested the amp with my old car subwoofer and wow...works really good! At first I was a bit disappointed at full max BUT it was because I had the wrong settings, fortunately the instructions provided were helpful. From the factory it comes in setting "M" which is for full range speakers. After I switched the mode to "B", wow, I had to turn down my volume! Pretty legit and nice unit I have here. We'll see on the durability and longevity of this unit as its only been about 2 hrs. Will update as time goes on.

### ⭐⭐⭐⭐ Power off thunk
*by A***R on January 27, 2024*

If you do the obvious thing and plug this into a switched outlet on your receiver, you get an annoying thunk when you power off your receiver with this turned on. I get the same thing if I pull the plug out of the wall, so it's not my receiver. I'm also using their power brick, so a different one may not do this. I am leaving it on all the time. It probably draws less than the built in subwoofer amp it's replacing, which was always warm to the touch. Otherwise, it seems to work well.

## Frequently Bought Together

- Douk Audio G4 Subwoofer Full-Frequency Mono Channel Digital Power Amplifier 100W
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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-26*