---
product_id: 3270629
title: "T-12AT7-JJ Amplifier Tube"
brand: "jj electronics"
price: "19128 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Jj Electronics"
url: https://www.desertcart.hu/products/3270629-t-12at7-jj-amplifier-tube
store_origin: HU
region: Hungary
---

# Amplification factor 60 for balanced gain Favored by blues & jazz guitarists 9-pin miniature preamp tube T-12AT7-JJ Amplifier Tube

**Brand:** jj electronics
**Price:** 19128 Ft
**Availability:** ✅ In Stock

## Summary

> 🎶 Dial in the perfect vibe — your amp’s new secret weapon!

## Quick Answers

- **What is this?** T-12AT7-JJ Amplifier Tube by jj electronics
- **How much does it cost?** 19128 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/3270629-t-12at7-jj-amplifier-tube)

## Best For

- jj electronics enthusiasts

## Why This Product

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

## Key Features

- • **Top-Ranked & Trusted:** Ranked #8 in Guitar Amplifier Tubes with stellar 4.8-star reviews
- • **Tame Overly Loud Amps:** Perfect solution to dial down excessive volume for home-friendly play
- • **Balanced Amplification:** Amplification factor of 60 delivers smooth, controlled gain without harsh distortion
- • **Precision 9-Pin Design:** Compact and reliable fit for your amp’s preamp stage
- • **Tone Tailored for Blues & Jazz:** Preferred choice for warm, expressive sound that pros swear by

## Overview

The T-12AT7-JJ is a 9-pin miniature preamp tube with an amplification factor of 60, offering less gain than the classic 12AX7. It’s highly favored by blues and jazz guitarists for its warm, balanced tone and is ideal for taming overly loud amps, making it perfect for home use. With top rankings and glowing reviews, this tube is a trusted upgrade for serious musicians seeking refined sound control.

## Description

9 pin miniature preamp tube (amplification factor = 60), less gain than a 12AX7, preferred by blues and jazz guitarists alike.

Review: This is awesome option for overly loud amps - This tune reduced my overly loud amp great! Line 6 spider valve big bee amp 40watt, it has a volume issue gets loud fast, put this tube in valve 1 and now this is a useable amp for home use. Made my amp very useable . Very please
Review: Recommended by Know Your Gear on YouTube. - This is a great tube.

## Features

- 9 pin miniature preamp tube (amplification factor = 60),
- Less gain than a 12AX7
- Preferred by blues and jazz guitarists alike

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000UMFQHA |
| Best Sellers Rank | #9,962 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in Guitar Amplifier Tubes |
| Color Name | clear |
| Compatible Devices | Guitar |
| Customer Reviews | 4.8 4.8 out of 5 stars (324) |
| Date First Available | July 31, 2007 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.317 ounces |
| Item model number | T-12AT7-JJ |
| Output Wattage | 20 Watts |
| Power Source | Corded Electric |
| Product Dimensions | 2.5 x 1 x 1 inches |

## Product Details

- **Brand:** JJ Electronics
- **Color:** clear
- **Compatible Devices:** Guitar
- **Output Wattage:** 20 Watts
- **Product Dimensions:** 1"D x 2.5"W x 1"H

## Images

![T-12AT7-JJ Amplifier Tube - Image 1](https://m.media-amazon.com/images/I/61jaXpo1t4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is awesome option for overly loud amps
*by K***S on October 26, 2025*

This tune reduced my overly loud amp great! Line 6 spider valve big bee amp 40watt, it has a volume issue gets loud fast, put this tube in valve 1 and now this is a useable amp for home use. Made my amp very useable . Very please

### ⭐⭐⭐⭐⭐ Recommended by Know Your Gear on YouTube.
*by C***A on December 10, 2025*

This is a great tube.

### ⭐⭐⭐⭐⭐ You just have to know what ones are good and what ones to miss
*by C***N on May 3, 2017*

I generally don't have a very high opinion of JJ. They get props for being really early in the game, they've been in the tube repro world for over 10 years now. But they haven't changed or improved in all that time. You just have to know what ones are good and what ones to miss. For instance, the ECC803, the long plate 12AX7 that they produce, has a decent tone, but heavy on the bottom end and weak on the top, which works great for some applications like bass amps, except for the extremely high, hissy noise floor. Their regular 12AX7 is totally fine, acceptable, but not exceptional like the Mullard repro or the Electro-Harmonix 12AX7EH (which is the best 12AX7 currently on the market). The rectifier tubes that JJ makes are all great. They don't cause weird voltage spikes and fulfill exactly the role they are supposed to do. This one just knocks it out of the park though. It's definitely at the higher end of the gain spectrum for the 12AT7 genre, but that's what you want. And the noise floor is, well, there's no floor at all. It's just noiseless. In a reverb driver position (undoubtedly what most people are buying 12AT7s for), this is what you want, because it can so readily pick up ambient hiss from the springs. This one just excels at hearing your reverb noise but not the ambient noise. I don't understand why Electro-Harmonix makes one of the best 12AX7s but one of the worst 12AT7s, but in my JJ is the only one to buy. You can also use this in your PI slot to lower your breakup point on your power tubes. So yeah, if you're a JJ skeptic like I am, trust me when I say, this is one of the good ones.

## Frequently Bought Together

- JJ Electronics Amplifier Tube (T-12AT7-JJ)
- JJ Electronics Amplifier Tube (T-12AX7-S-JJ)
- JJ Electronics (12AY7)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-13*