---
product_id: 43338190
title: "Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single"
brand: "electro-harmonix"
price: "RM194"
currency: MYR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.my/products/43338190-electro-harmonix-12at7-eh-preamp-vacuum-tube-single
store_origin: MY
region: Malaysia
---

# HiFi sound Guitar amp ready Single tube design Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single

**Brand:** electro-harmonix
**Price:** RM194
**Availability:** ✅ In Stock

## Summary

> 🎤 Elevate Your Audio Game!

## Quick Answers

- **What is this?** Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single by electro-harmonix
- **How much does it cost?** RM194 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/43338190-electro-harmonix-12at7-eh-preamp-vacuum-tube-single)

## Best For

- electro-harmonix enthusiasts

## Why This Product

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

## Key Features

- • **Compact Power:** Single tube design ensures easy integration into your existing setup without compromising on quality.
- • **ECC81 Equivalent:** Enjoy compatibility with ECC81, providing flexibility in your audio configurations.
- • **Durable & Reliable:** Crafted for longevity, this vacuum tube promises consistent performance for all your sound needs.
- • **Unleash Your Sound:** Transform your audio experience with the best 12AT7 choice for HiFi enthusiasts.
- • **Versatile Performance:** Perfectly suited for both HiFi systems and guitar amp circuits, making it a must-have for audiophiles and musicians alike.

## Overview

The Electro-Harmonix 12AT7 EH Preamp Vacuum Tube is a high-quality single tube designed for HiFi audio systems and guitar amplifiers, serving as an ECC81 equivalent for versatile applications.

## Description

Large plate format Twin Triode, ideal for use in driver and reverb circuits. Offers superior dissipation compared to NOS versions of this tube.

## Features

- Best 12AT7 choice for HiFi
- Also suitable for guitar amp circuits
- Single tube
- ECC81 equivalent

## Product Details

- **Item dimensions L x W x H:** 1 x 1 x 2.75 inches
- **Manufacturer:** New Sensor
- **Mounting Type:** Surface Mount
- **Brand:** Electro-Harmonix
- **Number of Channels:** 1

## Images

![Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single - Image 1](https://m.media-amazon.com/images/I/71uO6qeikSL.jpg)

## Questions & Answers

**Q: Why is Mine not working**
A: It could be a bad tube or the amp itself. We are more than happy to set up a return if the tube is bad, but we can not verify without testing the tube. We suggest consulting a professional repair tech to verify if the amp is the problem or if the tube is bad. If they conclude that the tube is the issue, get in touch with us to set up a return/exchange.

**Q: What are the shipping  dimensions of this item?**
A: From a web search ... the "mechanical" (NOT shipping) dimensions of the tube are below.  However, shipping dimensions would vary depending upon how the supplier decides to package the tube for shipment.  It has been my experience that this is inconsistent and nearly impossible to predict.  Suppliers typically package based on what will be sufficient to protect the item in transit and what materials they happen to have on hand.  So, you might order from the same company 2 times and the shipping materials could be different.  I think this question can only be answered by the supplier during the actual order process.MECHANICAL   Maximum Overall Dimensions      Length  2 3/16 inches    Seated Height  1 15/16 inches    Diameter  7/8 inches

**Q: Would there be further volume reduction if I also replaced the second preamp tube?**
A: Since a 12AT7 has only 60% of the gain of a 12AX7 yes it would reduce preamp output and volume at that stage.

**Q: Do these work**
A: I have this in a Zenith C845 AM/FM radio for over six years and so far it has worked and held up just like an NOS 12AT7.  I have had no problems with it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very Cool
*by H***L on May 30, 2025*

This is a great tube! I bought it to try in a preamp for a warmer acoustic guitar tone, and it really made a difference. Really well made, as expected from Electro Harmonics

### ⭐⭐⭐⭐⭐ Excellent in Fender Hot Rod
*by B***K on August 12, 2023*

I replaced the 2 12AT7's with AX7's. No longer need to route the signal through a pot on the effects loop. Before that pot was installed pushing the volume on channel 1 to from 1 to 2 was deadly your ears. One AX7 made it a little better but 2 is better still.

### ⭐⭐⭐⭐⭐ 8-10% tone improvement.
*by S***L on December 7, 2022*

Tubes aren’t as magical as people will lead you to believe, but I had around a 8-10% tone improvement installing these in a Deluxe. I DID have those terrible GT tubes that comes factory installed in it, which may be why I had the bigger improvement in tone. Expect 5% better if you already have quality tubes.

## Frequently Bought Together

- Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single
- Electro-Harmonix 7025EH Vacuum Tube
- JJ Electronics Amplifier Tube (T-12AX7-S-JJ)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-19*