---
product_id: 98405246
title: "New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes"
brand: "jj electronic"
price: "C$5064"
currency: NIO
in_stock: true
reviews_count: 8
category: "Jj Electronic"
url: https://www.desertcart.ni/products/98405246-new-in-box-gain-matched-pair-jj-electronics-tesla-12ax7
store_origin: NI
region: Nicaragua
---

# Instant Performance Boost Gain Matched Pair for Consistent Tone Enhanced Audio Clarity & Separation New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes

**Brand:** jj electronic
**Price:** C$5064
**Availability:** ✅ In Stock

## Summary

> 🎶 Unlock Legendary Tone with JJ Tesla Tubes – Hear What You’ve Been Missing!

## Quick Answers

- **What is this?** New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes by jj electronic
- **How much does it cost?** C$5064 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/98405246-new-in-box-gain-matched-pair-jj-electronics-tesla-12ax7)

## Best For

- jj electronic enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Durable:** Lightweight 0.634 oz tubes built to last, fitting seamlessly into your amplifier or preamp setup.
- • **Plug & Play Upgrade:** Easy installation with no batteries required—just pure analog warmth in a sleek glass-metal design.
- • **Trusted by Audiophiles:** Join thousands of musicians and vinyl lovers who swear by JJ Electronics for superior sound quality.
- • **Precision Gain Matching:** Experience perfectly balanced audio output with matched pairs for flawless tone consistency.
- • **Revitalize Your Vinyl & Guitar:** Bring your music to life with clearer highs, richer mids, and deeper lows that elevate every note.

## Overview

The JJ Electronics Tesla 12AX7 ECC83-S vacuum tubes come as a gain matched pair, designed to deliver consistent, high-fidelity audio performance. Ideal for guitar amplifiers and phono preamps, these tubes enhance sound clarity with distinct highs and rich mid-lows. Lightweight and durable, they offer an easy upgrade to elevate your analog audio experience, trusted by professionals and enthusiasts alike.

## Description

New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes

Review: Killer Price with instant results. - Im using the JJ's in my Pro-Ject Tube Box s. This is a Phono Pre...FYI. The Tubes instantly woke up my Vinyl Playback. Highs were more distinct with separation. I do hear an increase in low and mid range. I have Gold Lions in my Black Ice Audio Tube amp in my other setup. Im actually leaning towards trying the JJ's. in that setup as well. This is a fun sounding tube that gave my system a nice boost in performance. Id Buy again. Especially at that price.
Review: Great tubes and seller - Excellent tubes... my old tubes were scratchy... my guitar is now clear as a bell... very mellow sound. Shipping was fast... thanks!!

## Features

- New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes
- Size: 7.05 Ounce (Pack of 1)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MR3DZ1N |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #8,514 in Musical Instruments ( See Top 100 in Musical Instruments ) #6 in Guitar Amplifier Tubes |
| Color | Transparent |
| Customer Reviews | 4.6 4.6 out of 5 stars (95) |
| Date First Available | December 26, 2018 |
| Item Package Quantity | 1 |
| Item Weight | 0.634 ounces |
| Item model number | jj 12ax7 pair |
| Manufacturer | JJ Electronic |
| Material | Glass, Metal |
| Package Dimensions | 2.44 x 2.05 x 1.06 inches |
| Part Number | jj 12ax7 pair |
| Size | 3.5 inches |

## Product Details

- **Brand:** JJ Electronic
- **Color:** Transparent
- **Item Length:** 3.5 Inches
- **Manufacturer:** JJ Electronic
- **Material:** Glass, Metal

## Images

![New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes - Image 1](https://m.media-amazon.com/images/I/414vqfbg+BL.jpg)
![New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes - Image 2](https://m.media-amazon.com/images/I/81bi+m6ryLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Killer Price with instant results.
*by B***0 on February 23, 2024*

Im using the JJ's in my Pro-Ject Tube Box s. This is a Phono Pre...FYI. The Tubes instantly woke up my Vinyl Playback. Highs were more distinct with separation. I do hear an increase in low and mid range. I have Gold Lions in my Black Ice Audio Tube amp in my other setup. Im actually leaning towards trying the JJ's. in that setup as well. This is a fun sounding tube that gave my system a nice boost in performance. Id Buy again. Especially at that price.

### ⭐⭐⭐⭐⭐ Great tubes and seller
*by J***. on November 1, 2025*

Excellent tubes... my old tubes were scratchy... my guitar is now clear as a bell... very mellow sound. Shipping was fast... thanks!!

### ⭐⭐⭐⭐⭐ BRILLIANT SOUND
*by K***N on March 27, 2022*

These tubes really made a brilliant difference on my hybrid tube amplifier. After about 15 hours of use they settled in nice with clear high notes and lovely midtones and bass you can hear more than feel. Cannot speak on longevity yet because they only have been in use for around 50 hours. Good value so far. UPDATE: These tubes are performing flawlessly after one year of daily use. Very impressed! This is the only tube for my little amp!

## Frequently Bought Together

- New In Box Gain Matched Pair JJ Electronics Tesla 12AX7 ECC83-S Vacuum Tubes
- Pair of JJ EL84/6BQ5 Power Vacuum Tube
- JJ Electronics Amplifier Tube (T-12AT7-JJ)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-22*