---
product_id: 39184657
title: "12AX7 / ECC83, Balanced Triodes"
brand: "mullard"
price: "R$516"
currency: BRL
in_stock: true
reviews_count: 11
category: "Mullard"
url: https://www.desertcart.com.br/products/39184657-12ax7-ecc83-balanced-triodes
store_origin: BR
region: Brazil
---

# Balanced triodes within 3% Large sound stage with detail Handpicked, tested tubes 12AX7 / ECC83, Balanced Triodes

**Brand:** mullard
**Price:** R$516
**Availability:** ✅ In Stock

## Summary

> 🎸 Elevate your sound with Mullard’s authentic balanced triodes — hear the difference, feel the vibe!

## Quick Answers

- **What is this?** 12AX7 / ECC83, Balanced Triodes by mullard
- **How much does it cost?** R$516 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/39184657-12ax7-ecc83-balanced-triodes)

## Best For

- mullard enthusiasts

## Why This Product

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

## Key Features

- • **Tested & Certified:** Each tube arrives with test readings on the box, guaranteeing performance you can trust.
- • **Immersive Soundstage:** Experience a wide, detailed soundscape that brings your music to life with clarity and depth.
- • **Low Noise & Microphonics:** Factory-selected tubes minimize noise and microphonics for crystal-clear, professional-grade sound.
- • **Precision Balanced Triodes:** Handpicked for gain & conductance within 3%, ensuring flawless audio fidelity.
- • **Versatile Amp Compatibility:** Perfectly suited for phase inverters in guitar amps and high-fidelity audio systems alike.

## Overview

The Mullard 12AX7/ECC83 is a premium, handpicked vacuum tube featuring triodes balanced within 3% for gain and conductance. Designed for guitar and hi-fi amplifiers, it delivers a large, detailed soundstage with low noise and microphonics. Each tube is factory tested with readings provided, ensuring reliable, high-quality audio performance favored by audiophiles and professionals.

## Description

Large sound stage with excellent detail. Factory selected for low noise and microphonics. Best for hi-fi amps.

Review: So far so good - Yeah it's only been an hour of testing and listening to music but hey I wanna get these thoughts down quick! First off, there is heaps of gain. Listening to this tube with my Project Horizon headphone amp and HD600 headphones, compared to other tubes I've been using I can definitely hear some gain buzz when the signal is off. But that doesn't take away from the sound. Couple notes: -Balance across the tonal spectrum. Throughout the range of sound including midrange being present, just as much as the highs. I can hear anything in particular that sticks out, maybe a 100 hour burn in will speak otherwise. -Soundstage isn't narrow but it isn't wide either. The music sounds right in between the ears and not too forward either. Almost like the sound is being presented in a half circle if that makes sense! -Kind of reminds me of a solid state signature. I'm actually hoping that with more burn in the detail will kick back a bit and warmth and smoothness set in, but I can't complain. If I can remember to do it I'll swing by here with an update on how things end up going after some good burn in time.
Review: Mullard Tube - I got this to replace the stock tube of a channel strip, after the burn in process, the sound and tone of it was amazing!! these are the real deal, not a clone or generic copycat of the authentic version, outstanding value for the cost, highly recommended!

## Features

- Tubes are handpicked from balanced inventory
- Triodes are balanced within 3% for both gain and conductance
- Perfect for phase inverter in a guitar amp or for use in Hi-Fi amps
- Will have test readings written on the box
- Large sound stage with excellent detail. Low noise and microphonics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01NCZ9072 |
| Amplifier Type | Tube |
| Best Sellers Rank | #64,145 in Musical Instruments ( See Top 100 in Musical Instruments ) #308 in Guitar Amplifier Tubes |
| Brand | Mullard |
| Color | Clear |
| Compatible Devices | Guitar |
| Connector Type | 6.35mm Jack |
| Customer Reviews | 4.5 out of 5 stars 72 Reviews |
| Item Weight | 0.7 Ounces |
| Manufacturer | Mullard |
| Mfr Part Number | 12AX7/ECC83 |
| Model Name | 12AX7/ECC83 |
| Model Number | 12AX7/ECC83 |
| Output Channel Quantity | 1 |
| Output Wattage | 12 Watts |
| Power Source | DC Power Supply |
| UPC | 735757051677 |

## Product Details

- **Brand:** Mullard
- **Color:** Clear
- **Compatible Devices:** Guitar
- **Output Wattage:** 12 Watts
- **Item Weight:** 0.7 Ounces

## Images

![12AX7 / ECC83, Balanced Triodes - Image 1](https://m.media-amazon.com/images/I/61895SeeTJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ So far so good
*by A***T on March 27, 2019*

Yeah it's only been an hour of testing and listening to music but hey I wanna get these thoughts down quick! First off, there is heaps of gain. Listening to this tube with my Project Horizon headphone amp and HD600 headphones, compared to other tubes I've been using I can definitely hear some gain buzz when the signal is off. But that doesn't take away from the sound. Couple notes: -Balance across the tonal spectrum. Throughout the range of sound including midrange being present, just as much as the highs. I can hear anything in particular that sticks out, maybe a 100 hour burn in will speak otherwise. -Soundstage isn't narrow but it isn't wide either. The music sounds right in between the ears and not too forward either. Almost like the sound is being presented in a half circle if that makes sense! -Kind of reminds me of a solid state signature. I'm actually hoping that with more burn in the detail will kick back a bit and warmth and smoothness set in, but I can't complain. If I can remember to do it I'll swing by here with an update on how things end up going after some good burn in time.

### ⭐⭐⭐⭐⭐ Mullard Tube
*by G***D on March 6, 2026*

I got this to replace the stock tube of a channel strip, after the burn in process, the sound and tone of it was amazing!! these are the real deal, not a clone or generic copycat of the authentic version, outstanding value for the cost, highly recommended!

### ⭐⭐⭐⭐⭐ Sounds great
*by D***D on April 1, 2025*

Smooth classic Mullard sound.

## Frequently Bought Together

- Mullard 12AX7 / ECC83, Balanced Triodes
- Mullard EL84, Matched Pair (2 tubes)
- Mullard 12AX7/ECC83, Matched Trio

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-06-26*