---
product_id: 39962104
title: "Vacuum Tube, 12AX7 Matched Trio, Instrument-Amplifier Tubes, Polished Finish"
brand: "electro-harmonix"
price: "$119.43"
currency: USD
in_stock: true
category: "Electro Harmonix"
url: https://www.desertcart.us/products/39962104-vacuum-tube-12ax7-matched-trio-instrument-amplifier-tubes-polished-finish
store_origin: US
region: United States of America
---

# Polished finish for premium look Ultra low noise spiral filament Matched gain & conductance trio Vacuum Tube, 12AX7 Matched Trio, Instrument-Amplifier Tubes, Polished Finish

**Brand:** electro-harmonix
**Price:** $119.43
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your tone with the tube pros trust!

## Quick Answers

- **What is this?** Vacuum Tube, 12AX7 Matched Trio, Instrument-Amplifier Tubes, Polished Finish by electro-harmonix
- **How much does it cost?** $119.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/39962104-vacuum-tube-12ax7-matched-trio-instrument-amplifier-tubes-polished-finish)

## 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

- • **High-Gain Powerhouse:** Delivers rich, detailed musical tones that rival vintage NOS tubes
- • **Pro-Grade Reliability:** Trusted by musicians for balanced sound and durability
- • **Sleek Polished Finish:** Modern aesthetic that stands out on any amp setup
- • **Precision Matched Trio:** Consistent gain and conductance for flawless tone every time
- • **Noise-Cancelling Spiral Filament:** Reduces hum for crystal-clear sound clarity

## Overview

The Electro-Harmonix 12AX7 Matched Trio features precision-matched tubes with a unique spiral filament design that minimizes hum and noise, delivering high gain and detailed, balanced sound. Its polished finish adds a sleek, professional look, making it a top choice for guitarists and recording pros seeking vintage-quality tone with modern reliability.

## Description

The 12AX7EH provides high gain with ultra low noise and detailed, musical tone that rivals the most desirable NOS types. Unique spiral filament eliminates filament to cathode induced hum common on amps that use AC on the filaments.

## Features

- Matched Trio
- Matched for both gain and conductance
- Spiraled filament allowing for reduced noise
- Great value for a great sounding tube

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01IWC98JQ |
| Best Sellers Rank | #15,974 in Musical Instruments ( See Top 100 in Musical Instruments ) #36 in Guitar Amplifier Tubes #5,372 in Music Recording Equipment |
| Brand Name | Electro-Harmonix |
| Color | Polished |
| Connector Type | 9-pin miniature |
| Customer Reviews | 4.5 4.5 out of 5 stars (75) |
| Finish Type | Polished |
| Instrument Key | A |
| Item Dimensions | 3 x 1 x 3 inches |
| Item Weight | 1.8 Ounces |
| Manufacturer | Electro-Harmonix |
| Manufacturer Part Number | 12AX7 |
| Material Type | Brass |
| Model Name | 12AX7 |
| Model Number | 12AX7 |
| Set Name | Trio |
| Sound Profile | Balanced |
| Style | Modern |
| UPC | 735757050526 |
| Unit Count | 3.0 Count |

## Product Details

- **Brand:** Electro-Harmonix
- **Color:** Polished
- **Instrument Key:** A
- **Material:** Brass
- **Style:** Modern

## Images

![Vacuum Tube, 12AX7 Matched Trio, Instrument-Amplifier Tubes, Polished Finish - Image 1](https://m.media-amazon.com/images/I/617-x9s6qbL.jpg)

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**Shop now:** [https://www.desertcart.us/products/39962104-vacuum-tube-12ax7-matched-trio-instrument-amplifier-tubes-polished-finish](https://www.desertcart.us/products/39962104-vacuum-tube-12ax7-matched-trio-instrument-amplifier-tubes-polished-finish)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-13*