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Mono Channel Subwoofer Amplifier HiFi Mini Audio Monoblock Amp for Bass Shaker

Item description

Warm tips: Please connect only one input (RCA or AUX) at a time. Using both simultaneously may cause signal interference or mixing.
Features
  • Powerful Subwoofer Amplifier: Compact but mighty, the NS-21G is a 100W mono amplifier designed for passive subwoofers and bass shakers. Featuring the efficient TPA3116 Class D amplifier chip, it delivers strong and clean bass for home theaters, desktop systems, and gaming rigs. 
  • RCA & AUX Input for Wide Compatibility: The NS-21G supports both RCA and 3.5mm AUX inputs, making it easy to connect with TVs, phones, tablets, computers, CD players, and streaming boxes. Its dual-input design ensures the subwoofer amp integrates smoothly into almost any home audio system.  
  • One-Knob Simplified Control: Easily power on and adjust the output level with a single knob. The NS-21G integrates volume and power into one smooth dial, giving you instant control over your subwoofer output level without altering your main system settings, ideal for movies, games, and music.
  • NE5532 Op-Amp for Clearer Bass: Powered by the well-known NE5532 op amp, the NS-21G delivers smooth and detailed low-frequencies with low distortion and minimal noise. It’s a reliable choice that improves bass clarity for everyday listening, movie nights, or gaming sessions.  
  • Compact, Durable & Built for Bass Lovers: Designed in a robust all-metal case, the NS-21G is durable enough for long-term use and compact enough to fit on any desktop or shelf. Ideal for gamers, audiophiles, and home cinema lovers who need more punch in their low-end without sacrificing space.
Parameters
  • Brand: Nobsound
  • Audio input: RCA/3.5mm AUX
  • Audio output: Subwoofer out
  • Number of channel: mono
  • Chip: TPA3116
  • Op-amp: NE5532
  • Rated output power: 100W
  • THD+N: 0.04%
  • SNR: ≥103dB
  • RCA input sensitivity: 0.775V
  • Matched speaker impedance: 4-8Ω
  • Working voltage: DC 12-24V (5.5*2.5mm)
  • Dimensions (W*D*H): 90*105*30mm / 3.54*4.13*1.18in
  • Package dimensions (W*D*H): 205*180*55mm / 8.07*7.08*2.16in
  • Net weight: 325g / 0.72lb
  • Package weight: 700g / 1.54lb
Packing list
  • 1* NS-21G Amplifier
  • 1* DC 19V Power Adapter
  • 1* User Manual
Safe and secure payment by PayPal.
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Customs Clearance
We are NOT responsible for any customs duties fee.
We are NOT responsible for any import tax or customs delay.
 
Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). 

Free Return Within 30 Days

We provide  return within 30 days for all items you bought on eBay, full refund and return shipping will be provided.

1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes).

If you are satisfied with our products and service please leave a 5-star StarStarStarStarStar. Positive feedback rating Feedback is very important to us just like our lives, please DO contact us before you leave a neutral Neutral feedback rating or negative Negative feedback rating feedback, we will provide better solutions until you are satisfied.

 

 

 

Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc.
 
As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable.
 
We will spare no efforts to bring great products and service for customers and extremely to improve our customers’ listening experience.
Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at:
 
 Working time

Beijing(CN)Monday-Friday09:00 AM - 18:00 AM
New York(US)
Sunday to Thursday08:00 PM - 05:00 AM
London(UK)Monday-Friday01:00 AM - 10:00 AM
Paris(FR)Monday-Friday02:00 AM - 11:00 AM
 
During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation.
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