---
product_id: 514308873
title: "New in Box Gain Matched Pair s Tesla 12AX7 ECC83-S Vacuum Tubes"
brand: "jj electronic"
price: "£53.46"
currency: GBP
in_stock: true
reviews_count: 5
category: "Jj Electronic"
url: https://www.desertcart.co.uk/products/514308873-new-in-box-gain-matched-pair-s-tesla-12ax7-ecc83
store_origin: GB
region: United Kingdom
---

# Gain matched precision Enhanced audio clarity Improved bass definition New in Box Gain Matched Pair s Tesla 12AX7 ECC83-S Vacuum Tubes

**Brand:** jj electronic
**Price:** £53.46
**Availability:** ✅ In Stock

## Summary

> 🎶 Unlock your amp’s true voice with JJ Tesla tubes!

## Quick Answers

- **What is this?** New in Box Gain Matched Pair s Tesla 12AX7 ECC83-S Vacuum Tubes by jj electronic
- **How much does it cost?** £53.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/514308873-new-in-box-gain-matched-pair-s-tesla-12ax7-ecc83)

## 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

- • **Iconic Tesla Heritage:** Harness the legacy of Tesla design for authentic vintage warmth.
- • **Precision Gain Matching:** Experience perfectly balanced amplification for crystal-clear sound.
- • **Audiophile-Grade Clarity:** Elevate your music with enhanced imaging and pristine tonal detail.
- • **Plug & Play Compatibility:** Seamlessly upgrade your tube amplifier with a trusted JJ Electronics pair.
- • **Robust Glass Construction:** Durable, high-quality glass ensures longevity and consistent performance.

## Overview

The JJ Electronic Tesla 12AX7 ECC83-S vacuum tubes are a gain-matched pair designed to deliver superior audio clarity, enhanced bass response, and reliable performance for professional and enthusiast tube amplifier users. Crafted with durable glass and precision engineering, these tubes bring vintage warmth and modern consistency to your musical setup.

## Description

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

Review: Very clean sounding Tubes - Ordered a matched pair of these vacuum tubes, has definitely improved the imaging, clarity and bass definition on my Project Audio Tube box S2.
Review: Valves arrived looking fine but broken. - Unfortunately the valves are broken and therefore did not resolve my issue. I have had to buy another set.

## 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 |
| Best Sellers Rank | 12,968 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 52 in Amplifier Accessories |
| Brand | JJ Electronic |
| Colour | Gold |
| Customer Reviews | 3.6 out of 5 stars 9 Reviews |
| Item Length | 3.5 Inches |
| Item length | 3.5 Inches |
| Manufacturer | JJ Electronic |
| Material | Glass |
| Specific uses for product | Amplification of electronic instruments |
| Unit Count | 1.0 count |

## 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 s Tesla 12AX7 ECC83-S Vacuum Tubes - Image 1](https://m.media-amazon.com/images/I/81bi+m6ryLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very clean sounding Tubes
*by S***S on 2 March 2025*

Ordered a matched pair of these vacuum tubes, has definitely improved the imaging, clarity and bass definition on my Project Audio Tube box S2.

### ⭐ Valves arrived looking fine but broken.
*by A***R on 6 January 2026*

Unfortunately the valves are broken and therefore did not resolve my issue. I have had to buy another set.

### ⭐⭐⭐⭐⭐ Good set of valves
*by T***I on 7 October 2024*

Came nicely packaged in a foam insert and cardboard packaging. Slotted into my Blackstar amp nicely. Worked first time, nothing needed adjusting. (Not sure if it needs too) only time will tell how long they last.

## 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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**Shop now:** [https://www.desertcart.co.uk/products/514308873-new-in-box-gain-matched-pair-s-tesla-12ax7-ecc83](https://www.desertcart.co.uk/products/514308873-new-in-box-gain-matched-pair-s-tesla-12ax7-ecc83)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-02*