---
product_id: 109787670
title: "Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement"
brand: "riverstone audio"
price: "₩148636"
currency: KRW
in_stock: false
reviews_count: 12
category: "Riverstone Audio"
url: https://www.desertcart.kr/products/109787670-riverstone-audio-matched-pair-2-tubes-jan-5654w-fully-tested
store_origin: KR
region: South Korea
---

# Matched within 3% precision Low-noise audio upgrade 3-year warranty backed Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement

**Brand:** riverstone audio
**Price:** ₩148636
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your sound with vintage precision — don’t let your amp miss out!

## Quick Answers

- **What is this?** Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement by riverstone audio
- **How much does it cost?** ₩148636 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/109787670-riverstone-audio-matched-pair-2-tubes-jan-5654w-fully-tested)

## Best For

- riverstone audio enthusiasts

## Why This Product

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

## Key Features

- • **Precision Matched Pair:** Each tube pair is matched within 3% for plate current and mutual conductance, ensuring flawless audio consistency.
- • **Confidence with Warranty:** Backed by a no-nonsense 3-year warranty and rigorous life & sound testing for peace of mind.
- • **Plug & Play Compatibility:** Direct replacement for 7-pin 6J1, 6AK5, EF95 tubes—no guesswork, no amplifier damage risk.
- • **Vintage Military-Grade Quality:** Ruggedized JAN 5654W tubes with superior reliability and authentic NOS performance from the USA.
- • **Audiophile-Approved Sound Upgrade:** Experience up to 30% enhanced bass and 25% crisper treble for a richer, warmer soundstage.

## Overview

Riverstone Audio’s matched pair of JAN 5654W vacuum tubes delivers military-grade, low-noise performance with precision matching within 3% for plate current and mutual conductance. Designed as a direct, safe replacement for 7-pin 6J1, 6AK5, and EF95 tubes, these NOS tubes offer audiophile-grade sound enhancements backed by a 3-year warranty and rigorous testing, making them the ultimate upgrade for discerning audio professionals.

## Description

5654W tubes are a direct substitute for 7-pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W, EF95 and 403B tubes. For other substitutions, check with your amplifier manufacturer - amplifer damage can occur if the wrong type of tubes are used. Plate current and Gm for the tubes are matched to within 3%. Riverstone Audio's tested/matched 5654W tubes will test at NOS levels, with Gm above 4500 micro-mho and a plate current (ip) of 6.5 mA or higher (tested in fixed-bias mode at plate and screen voltages of 120 V and grid voltage of -2.0 V). The vacuum tubes are carefully packed for shipping and will have Riverstone Audio name, logo and QC labels on the boxes. Vacuum tubes sold by Riverstone Audio are backed by a 3-year warranty. 5654W tubes were originally designed as a low-noise upgrade for 6AK5 and EF95 vacuum tubes. The "W" designation refers to ruggedized military-grade tubes with better quality control and enhanced reliability. These vintage tubes have found new life as a replacement for 6J1, 6J1P (6ZH1P-EV), 6AK5 and EF95 tubes and are used by audiophiles for improved sound quality.

Review: GOOD - 5 Stars for a Rs.3000/- upgrade. Changed the stock tubes on my Aiyima T2 preamp. The result is awesome. To my ears the improvements are 20% warmth, treble 25% and bass 30% comparing the stock tubes(6J-?). Little bit muddy on MID but on some files only.
Review: Replaced for AIYAMA T9 tube. Sound quality now very clean and crisp. - Excellent packing. Delivered before time. tube working fine. replace for AIYAMA T9 tube. Sound quality now very clean and crisp.

## Features

- Tested and matched pair (2 tubes) of low-noise 7-Pin NIB/NOS JAN 5654W Vacuum Tubes. Considered one of the best of the 5654 / 6AK5 / EF95 family of tubes for audio use.
- Our platinum Grade 5654W vacuum tubes are matched within 3% for both plate current (ip) and mutual conductance (Gm) and are backed by our no-nonsense 3-year warranty.
- We guarantee that the 5654W tubes selected for our Platinum Grade matched pairs test at NOS levels at or above 4500 micro-mho with a plate current of 6.6 mA or higher. All tubes must also pass a specialized life test and an audio sound test.
- Riverstone Audio Platinum Grade tubes are provided with data labels showing measured ip and Gm.
- Amplifier damage can occur if you substitute the wrong type of tube. 5654W tubes should only be used to directly replace 7-Pin 6J1, 6J1P / 6J1P-EB / 6Zh1P-EV, 6AK5, 6AK5W and EF95 tubes. DO NOT substiture for other types of 7-pin vacuum tube unless approved as a substitute by the manufacturer of your audio device.
- For JAN 5654W tubes, water-based silk-screen printing was used for final tube-markings; the green-color print may be faded or partially missing due to the age of the tubes (the manufacture of 5654W tubes ended approx. 35 years ago). Determing the authenticity of a 5654W tube is realtively straightforward, as both "5654" and "USA" were etched into the glass during the manufacture process (this can be seen in one of the listing images). The final green-color print was used to denote additional details such, including "JAN 5654W", "Made in USA", factory logo, date-code and other tube specifications such as the "JAN" (Joint Army Navy) miltary-use designation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01BFJDTW0 |
| Audio Wattage | 1.8 Watts |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #11,677 in Musical Instruments ( See Top 100 in Musical Instruments ) #25 in Amplifier Accessories |
| Brand | Riverstone Audio |
| Colour | multicolour |
| Colour Screen | No |
| Country of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,850) |
| Date First Available | 25 July 2016 |
| Generic Name | vacuum tube |
| Includes AC Adapter | No |
| Includes Rechargeable Battery | No |
| Includes remote | No |
| Item Weight | 181 g |
| Item model number | 2PC-GE5654W |
| Manufacturer | Riverstone_Audio |
| Material | Glass |
| Maximum Pressure | 7 Bars |
| Model | 2PC-GE5654W |
| Model Name | Riverstone Matched/Tested Pair 5654W |
| Model Year | 1988 |
| Net Quantity | 2.0 Count |
| Nominal Wall Thickness | 1.3 mm |
| Package Dimensions | 10.41 x 8.13 x 4.32 cm; 181 g |
| Special Features | easy to install |
| UPC | 763769918220 |

## Product Details

- **Brand:** Riverstone Audio
- **Colour:** multicolour
- **Manufacturer:** Riverstone_Audio
- **Material:** Glass
- **Maximum Pressure:** 7 Bars
- **Nominal Wall Thickness:** 1.3 mm
- **UPC:** 763769918220

## Images

![Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement - Image 1](https://m.media-amazon.com/images/I/51-UUY5asVL.jpg)
![Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement - Image 2](https://m.media-amazon.com/images/I/518IJSwkeQL.jpg)
![Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement - Image 3](https://m.media-amazon.com/images/I/51GoXUg-nXL.jpg)
![Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement - Image 4](https://m.media-amazon.com/images/I/51TOpuU6TEL.jpg)
![Riverstone Audio - Matched Pair (2 Tubes) JAN 5654W Fully-Tested Vacuum Tubes 6J1 / 5654 /6AK5/ EF95 / 6AK5 Tube Replacement - Image 5](https://m.media-amazon.com/images/I/51rFMXgNTRL.jpg)

## Questions & Answers

**Q: Is it works with nfj & fx audio tube 03 preamplifier**
A: It's a great direct replacement for the 6J1 tube. Definitely improves sound quality

## Customer Reviews

### ⭐⭐⭐⭐⭐ GOOD
*by T***A on 15 October 2024*

5 Stars for a Rs.3000/- upgrade. Changed the stock tubes on my Aiyima T2 preamp. The result is awesome. To my ears the improvements are 20% warmth, treble 25% and bass 30% comparing the stock tubes(6J-?). Little bit muddy on MID but on some files only.

### ⭐⭐⭐⭐⭐ Replaced for AIYAMA T9 tube. Sound quality now very clean and crisp.
*by N***N on 6 January 2026*

Excellent packing. Delivered before time. tube working fine. replace for AIYAMA T9 tube. Sound quality now very clean and crisp.

### ⭐⭐⭐⭐⭐ Genuine seller, genuine product and it's just wow
*by A***R on 3 February 2022*

The seller delivered genuine product. I've heard the GE tubes making a huge difference and they are indeed a wow. I was blown away with the bass as well as warmth.

## Frequently Bought Together

- 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
- Fosi Audio Box X2 Phono Preamp, Mini Stereo Audio Hi-Fi Preamplifier with Gain Gear, Pre-Amplifier for MM Turntable Phonograph and Record Player, with DC 12V Power Supply
- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-07*