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Nobsound G2 PRO HiFi Subwoofer/Full-Frequency Mono Digital Power Amplifier 300W

Item description

Features
  • Flexible FLAT/SUB mode switch: G2 PRO is a mono channel amplifier with 2 working modes, can serve as both a full-frequency or subwoofer amp for both active and passive subwoofers. Two units can independently power the left and right channels to build 2.0 channel system, perfect for custom HiFi setups.  
  • Exclusive Gain Control: Design with switchable 2-level of output gain(32/36 dB) and SUB frequency adjustment(40-300Hz), it easily matches input levels for seamless, flawless sound. Fine-tune your audio precisely and experience richer, clearer tones of the audio source.

  • Efficient 300W Output Performance: Using TPA3255D2 chip, G2 PRO delivers up to 300W. Perfect for driving most home passive speakers or subwoofers in various environments like bookshelf, desktop, or floor-standing systems. Enjoy powerful, distortion-free sound that fills any space.

  • Sub Out Expands Audio System: Designed with a SUB OUT to connect active subwoofers, the G2 PRO pairs with a 2.0 amp for a powerful 2.1 system or adds an active subwoofer to upgrade to 2.2 channels for deeper bass. Compatible with Douk Audio BS-1 bass shakers, it delivers tactile feedback for immersive gaming, movies, and VR steups.  

  • Mini Size with Exquisite Appearance: a mono integrated Class D amplifier featuring a compact design that seamlessly fits any setup from desktops to home theaters. Built with a durable CNC-machined aluminum chassis and gold-plated terminals, it combines fashion and function, making it ideal for HiFi enthusiasts.

Q: What power adapter is included, and can it be upgraded for higher output? 
A: Default comes with 32V/5A power adapter enough for common use, if you want higher power output to drive your subwoofer/speaker better, please click LINK to buy DC 48V/5A power adapter.   

Q: Can the SUB signal and the main amplifier output at the same time?  
A: Yes, they can output together.  

Q: What knobs control the speaker output and the SUB output on the G2 PRO?  
A: The volume knob controls the volume of speaker ouput and SUB OUT in both FLAT and SUB modes; the SUB FREQ knob controls the subwoofer frequency range of speaker output and it only works in SUB mode.  

Q: Why does the G2 PRO stop outputting sound when the volume is turned above 75%?  
A: Please check your power adapter. If the power output is not enough, the G2 PRO may enter protection mode when the volume exceeds 75%. 
 
Q: How to build a 2.0 channel setup via G2 PRO?
A: Use 2PCS G2 PRO units to independently drive the left and right channels. 
 
Q: How to use G2 PRO to build a 2.1 channel setup?
A: ① Connect a 2.0 amp to passive speakers and a G2 PRO to a passive subwoofer for 2.1.
② Use two G2 PROs for full-range speakers and an active subwoofer via SUB output for 2.1.
③ Use three G2 PROs for full-range speakers and passive subwoofer, requiring a 3-way input splitter.  
Parameters
  • Brand: Nobsound
  • Model: G2PRO
  • Audio input: Stereo RCA
  • Audio output: Banana Speaker Jacks/Subwoofer out
  • Max output power: 300W
  • Matched impedance: 2-8Ω
  • Input sensitivity: 0.775V
  • Bass cutoff frequency range: 40-300Hz
  • Slope of bass attenuation: -12dB Slope
  • Full frequency response:20Hz-20kHz(±3dB)
  • THD: 0.03%
  • SNR: ≥106dB
  • Voltage range: DC24-48V(5.5*2.5mm)
  • Dimensions(W*D*H): 117*128*34mm / 4.61*5.04*1.34in
  • Package dimensions(W*D*H): 257*215*56mm / 10.12*8.46*2.20in
  • Net weight:498g/1.10lb
  • Package weight:1.20kg/2.65lb
Packing List
  • 1* G2 PRO Amplifier
  • 1* 32V/5A Power Supply
  • 1* User Manual
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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).

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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
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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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