---
product_id: 731427000
title: "Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black)"
brand: "nobsound"
price: "$25.98"
currency: USD
in_stock: false
reviews_count: 7
url: https://www.desertcart.us/products/731427000-nobsound-bluetooth-5-0-valve-amplifier-2-channel-class-d
store_origin: US
region: United States of America
---

# 6K4 vacuum tubes warmth Bluetooth 5.0 QCC3003 chip 50W×2 powerful output Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black)

**Brand:** nobsound
**Price:** $25.98
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your audio game with vintage warmth and modern power!

## Quick Answers

- **What is this?** Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) by nobsound
- **How much does it cost?** $25.98 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/731427000-nobsound-bluetooth-5-0-valve-amplifier-2-channel-class-d)

## 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

- • **Immersive HiFi Warmth:** 6K4 vacuum tubes enrich your sound with vintage warmth and depth, turning every track into a live concert experience.
- • **Seamless Connectivity:** Bluetooth 5.0 with QCC3003 chip plus RCA and AUX inputs ensure effortless, lossless streaming from all your favorite devices.
- • **Tailored Sound Control:** Independent treble and bass knobs let you customize your audio profile for the perfect balance every time.
- • **Powerful & Clean Output:** TPA3116 chip delivers 50W×2 with ultra-low distortion, filling your space with crystal-clear, room-filling sound.
- • **Compact Elegance with Smart Design:** Sleek black chassis with LED indicators, input switches, and speaker protection blends style with advanced functionality.

## Overview

The Nobsound Bluetooth 5.0 Valve Amplifier combines classic 6K4 vacuum tube warmth with cutting-edge Bluetooth 5.0 connectivity and a powerful TPA3116 chip delivering 50W×2 output. Designed for home passive speakers, it offers multiple inputs (Bluetooth, RCA, AUX), independent bass and treble controls, and a compact, stylish design with LED indicators and speaker protection, making it the perfect fusion of retro audio charm and modern digital convenience.

## Description

Description:  Elevate your audio experience with the Nobsound Bluetooth 5.0 Valve Tube Power Amplifier, a sleek black unit that combines modern technology with classic tube warmth.  With multiple audio inputs, including Bluetooth, RCA, and AUX, this amplifier is designed to connect seamlessly with a variety of devices, ensuring compatibility and convenience.  The integrated vacuum tubes work to enhance the digital sound sources, providing a rich and realistic audio experience. With a max output of 50W+50W (4Ω load) from the TPA3116 amp chip, this amplifier delivers powerful, distortion-free sound that fills any room.  Control your sound precisely with the separate treble and bass adjustment, allowing you to achieve the perfect balance for your personal taste.  The compact size and considerate design features, such as the input switch and LED indicators, make this amplifier not only a powerful performer but also an elegant addition to your home or desktop audio setup.  Parameters: Audio Inputs: Bluetooth, stereo RCA, 3.5mm AUX Audio Output: Banana speaker jacks Amplifier Chip: TPA3116 Rated Output Power: 30W+30W@8Ω / 50W+50W@4Ω Speaker Impedance: 4Ω-8Ω Frequency Response: 20Hz-20KHz Signal to Noise Ratio: >99dB THD+N: <1% Working Voltage: DC 19V (5.5mm/2.5mm) Dimensions: 11513233mm / 4.535.201.30in Net Weight: 515g / 1.14lb Package Weight: 1.1kg / 2.43lb Packing List: 1 x M8 Amplifier 2 x 6K4 Tubes 1 x 19V Power Supply 1 x Bluetooth Antenna Warm Tips About Noise Issue: Low-quality audio cables can often cause static noise. Ensure your sound source is free from issues, as tube amplifiers will amplify all sounds, including noise. Check that the tubes are securely plugged into the tube sockets. Electronic devices like routers and mobile phones may interfere with the audio signal, potentially causing static noise. If you encounter any issues that aren't resolved by these tips, please contact us. We are always eager to assist you and provide the best customer service possible.

## Features

- Multiple Audio Inputs: Strong compatibility with Bluetooth, stereo RCA, and 3.5mm AUX inputs, enhancing sound quality when connected to amplifiers or active speakers, utilizing a QCC3003 Bluetooth chip for stable, lossless transmission.
- HiFi Sound Quality: Vacuum tubes filter out digital sounds, enriching the audio with warmth, sweetness, and an expansive sound field, providing a more immersive listening experience.
- Powerful Output with Low Distortion: The classic TPA3116 amp chip delivers up to 50W+50W (4Ω load) with ultra-low distortion and no audible noise, easily driving most home passive speakers.
- Independent Treble & Bass Control: Fine-tune the bass and high-frequency components for perfect HiFi effects, adding a delicate and charming touch to your audio system.
- Compact Design with Advanced Features: Real-time LED indicators and input switches, high-quality relays, and a high-precision crystal oscillator with power-on protection to safeguard your speakers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Nobsound |
| Item model number | GFJ583 |
| Package Dimensions | 38.4 x 21 x 8.2 cm; 1.18 kg |
| ASIN | B07C22L1DT |
| Guaranteed software updates until | unknown |

## Product Details

- **Voltage:** 19 Volts
- **Manufacturer:** Nobsound
- **Maximum supply voltage:** 24 Volts
- **Minimum supply voltage:** 12 Volts
- **Mounting type:** Surface Mount

## Images

![Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) - Image 1](https://m.media-amazon.com/images/I/61KJUHjyj3L.jpg)
![Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) - Image 2](https://m.media-amazon.com/images/I/61y7x0g9ZPL.jpg)
![Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) - Image 3](https://m.media-amazon.com/images/I/61Z0IXBCCvL.jpg)
![Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) - Image 4](https://m.media-amazon.com/images/I/61CmKDFnR3L.jpg)
![Nobsound Bluetooth 5.0 Valve Amplifier, 2 Channel Class D Digital HiFi Audio Power Amplifier for Home Passive Speakers with 6K4 Vacuum Tubes 50W×2 (Black) - Image 5](https://m.media-amazon.com/images/I/61bS3anUBNL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great little unit
*by C***B on 7 January 2021*

Very happy with this, it arrived the next day and took very little assembly. It's extremely simple with only a volume and tone control but I hooked it up to a pair of Tannoy speakers and was very pleased with the sound quality. Looking through the reviews there are a pair of matched valves that can be bought as an upgrade that are said to make performance even better, so that'll be my next purchase. Bang-for-bucks is brilliant, playback via bluetooth is rich and vibrant and it's a really small footprint too. All in all, very happy.

### ⭐⭐⭐⭐⭐ Great little class D amp with a Warm sound, However the power supply is not 100W capable.
*by M***E on 27 November 2021*

I am not one to leave reviews but this little amp is fantastic ad warm. It brings to life old Toshiba speakers that are now very spacious and a JOY to listen to.The power supply is the BIG issue it is not rated to 100W and you will notice this at higher volumes where the amp will cut out.I bought a DELL laptop power supply for £10 that outputs 19.5v @6.5A and this gives 130W so is more than ample enough to power the amp. I did need to cut the cables so I was able to use the original jack for the amp.With the new dell PSU, I can now push the speakers beyond their capabilities and the sound now is even more taught than before.I also have ordered 4x 6J2P-EV on ebay for £8.88 ridiculously cheap original Russian old/new stock which I am certain will bring new dynamics and clarity to the sound.I would highly recommend it but the PSU is a limitation and needs to be addressed.good luck.

### ⭐⭐⭐⭐ Fantastic little Amp
*by P***N on 26 August 2020*

I bought this principally for its Bluetooth abilities which turned out to be very good. I have hooked it up to my Tannoy autographs ( the big ones that look like commercial refrigerators) and the sound is very detailed and at 50 W per channel they drive these big speakers very well indeed the only limit on volume is your ears! The Bass is is very accurate and articulate and all together a very pleasing sound . This is of course a hybrid but it’s performance isn’t far short of an entirely tubed amp and great value for money . Comes with a spare tube which in the event was duff hence not 5 stars all round. It might be improved by another aux input although it’s physically very small making it difficult to see how that might be achieved. No reservations on recommending this

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-18*