---
product_id: 82367975
title: "Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp"
brand: "nobsound"
price: "¥4955"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/82367975-nobsound-6j9-vacuum-tube-integrated-amplifier-mini-audio-hifi-stereo
store_origin: JP
region: Japan
---

# 18-600Ω headphone impedance range SNR ≥110 dB for clear sound ≥1100mW output power Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp

**Brand:** nobsound
**Price:** ¥4955
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your sound game with vintage vibes and modern power!

## Quick Answers

- **What is this?** Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp by nobsound
- **How much does it cost?** ¥4955 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/82367975-nobsound-6j9-vacuum-tube-integrated-amplifier-mini-audio-hifi-stereo)

## 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

- • **Compact & Stylish:** Sleek mini form factor with iconic vacuum tubes adds a vintage vibe to your modern audio setup.
- • **Powerful Audio Boost:** Delivers robust 1100mW output to drive your headphones with crystal-clear clarity.
- • **Ultra-Low Distortion:** Experience pristine sound with total harmonic distortion under 0.005%, ensuring pure audio fidelity.
- • **Noise-Resistant Design:** Engineered to minimize interference—keep your soundstage clean and immersive even in busy environments.
- • **Universal Headphone Compatibility:** Supports a wide impedance range (18-600Ω) to match your favorite audiophile headphones.

## Overview

The Nobsound 6J9 Vacuum Tube Integrated Amplifier is a compact, high-fidelity headphone amp delivering over 1100mW output with ultra-low distortion and a wide 18-600Ω impedance range. Designed for audiophiles seeking rich, warm tube sound, it features noise handling capabilities to ensure clean audio in various environments, all wrapped in a stylish mini chassis perfect for desktop or portable use.

## Description

Notice: Please turn on the amplifier for about 15 seconds before you connect the audio source and put on the headset. We recommend using 24~600Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable. As there will be tube Microphone effect, please keep the amplifier steady while using it. For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal. If there are no interference, please remove all input and listen to see if the noise still exists. If so, the device may be defective and you can contact us to get support.  Specifications: Output power: ≥1100 mW (32 ohm) Headphone Adapter Impedance: 18-600 ohm Total harmonic distortion: <0.005% SNR: ≥110 dB Frequency Response: 20 Hz - 30 kHz Size: 111*69*32 mm / 4.37*2.72*1.26 in (Height: 73 mm with vacuum tube installed) Net Weight: 185 g / 0.41 lb Power supply: Input voltage: AC 100-240V 50/60 Hz; Output voltage: DC 6V 2000Ma  Full List of Replacement Tubes: 6J1, 6ж1П, 6AK5, 6BC5, 403A/B, 5654, EF40, EF95, CV850, 6J2, 6ж2П, 6AS6, CV2522, EF11/732, CV4011, 6J3, 6ж3П, EF96, CV848, 6BC6, 6AG5, 6J4, 6ж4, 6136, 6BX6, 6AC7, EF94, 6AU6, 6J5, 6ж5П, EF80, CV2521, 6F36, 6AH6, 6AN5, 6K4, 6K5, 6K4П, 6BA6, 6DA6, EF89/93, 5749  Packing List: 1 * headphone amplifier 1 * power supply 2 * 6J3 vacuum tubes

## Features

- Noise Handling & Wide Impedance Compatibility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Nobsound |
| Material | Plastic |
| Model Name | 6J9 |
| Power Source | Corded Electric |
| Special Feature | Noise Handling & Wide Impedance Compatibility |
| Item Weight | 399 g |
| Compatible Devices | Audio devices with standard audio output |
| Recommended Uses For Product | Enhancing audio in various settings (e.g., gaming, watching movies, listening to music in noisy environments) with headphones |
| Control Type | Button Control |
| Rechargeable Battery Included | No |
| Noise Control | None |
| Manufacturer | Nobsound |
| UPC | 769700919653 |
| Model | 769700919653 |
| Product Dimensions | 11.1 x 3.2 x 0.1 cm; 399.16 g |
| Item model number | 769700919653 |
| Special Features | Noise Handling & Wide Impedance Compatibility |
| Audio Wattage | 1.1E+3 Watts |
| Voltage | 230 Volts |
| Wattage | 1 Watts |
| Batteries Included | No |
| Batteries Required | No |
| Includes remote | No |

## Product Details

- **Brand:** Nobsound
- **Material:** Plastic
- **Model Name:** 6J9
- **Power Source:** Corded Electric
- **Special Feature:** Noise Handling & Wide Impedance Compatibility

## Images

![Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp - Image 1](https://m.media-amazon.com/images/I/71Lt+M9uXsL.jpg)
![Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp - Image 2](https://m.media-amazon.com/images/I/71xPdERH6DL.jpg)
![Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp - Image 3](https://m.media-amazon.com/images/I/71Gut4irIZL.jpg)
![Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp - Image 4](https://m.media-amazon.com/images/I/61WlkB+SvqL.jpg)
![Nobsound 6J9 Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp - Image 5](https://m.media-amazon.com/images/I/71qUF5ORXdL.jpg)

## Questions & Answers

**Q: Is this a true 100% tube driven amp? Most Nobsound amps use tubes for pre-amp and use transistor amplification, rendering the tubes useless.**
A: It uses tubes for pre-amp and use transistor amplification.

**Q: Would this work for the audio-technica ath-m50x headphones?**
A: It would work fine for your headphones.  This amp has quite a bit of power for such a small amp. I'm using beyerdynanic 990  250 ohm mainly and still have room on volume knob to go higher.  With the AT headphones, you wouldn't need much power at all since they are 32ohm speakers.

**Q: Can the line/headphone out be connected to powered speaker?**
A: Yes, but depending on your powered speakers it might sound distorted if you turn the volume up past halfway.

**Q: What is the difference between a tube amp and a dac/amp combo?**
A: A tube amplifier only amplifies an analog signal, say, from an  iPhone headphone output.  The DAC (digital analog converter) converts the original digital sound data to analog form which  is then fed  to the amp.  You can get a DAC as a separate component  from the amp or combined with the amp in one unit.  You already have a DAC in your phone and PC, however, the DAC components are often of much better quality than one would find in a cell phone or PC DAC, giving you better sound quality.

## Frequently Bought Together

- Nobsound NS-08E Vacuum Tube Headphone Amplifier Hi-Fi Valve Headphone Amp Stereo Audio Preamplifier
- Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade Pair
- Matched Pair 7-Pin GE JAN 5654W Vacuum Tubes Upgrade for 6AK5/6J1/6Ж1/ EF95/6J1P

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-22*