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Heavier7Strings Ver.1.2.1: Installing the Latest Update and Points to Note

Software Synthesizer TutorialsPublished 2018.06.18Updated 2026.07.17
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Heavier7Strings Ver.1.2.1 from Three-Body Technology is an important update that adds two new distortion effect modules, HammerMetal and MainTank. This version also reduces latency, improves sound quality and fixes existing bugs, making it an essential update for DTM users producing heavy metal sounds. After updating, you can check the version from the icon at the bottom right of the GUI, and the new effects appear at the bottom left of the effects section.

How to update to 1.2.1

Two new effects have been added to "HeavierFX," the plug-in in Three-Body Technology's "Heavier7Strings."
An overview and how to use them are explained in the article below.
https://sleepfreaks-dtm.com/sale/heavier7strings-20off/

To use the two new effects, you need to update to the latest version, 1.2.1.
Please download the latest installer from the URL below.
http://www.threebodytech.com/updates

Effects added in Heavier7Strings 1.2.1

What's been added and improved up to the Ver.1.2.1 update

  • Two new effect modules: HammerMetal and MainTank. Both are distortion modules.
  • Reduced latency in the AMP and cabinet modules.
  • Improved sound quality of the AMP and cabinet.
  • Fixed a bug introduced in 1.1.5 (the amount of distortion in the AMP module changed at different sample rates).
  • The sound from the AMP and cabinet modules is unchanged from the previous series (1.1.X).
  • Improved bad sounds that occasionally occurred with some sound cards.

How to check the version

To check whether it installed correctly, click the icon at the bottom right of the GUI.
Clicking the Heavier7Strings VST icon

You can check the current version at the bottom right of the information list.

Heavier7Strings VST information list

Checking Heavier7Strings 1.2.1

How to find the plug-ins

The two newly added plug-ins appear at the bottom left of the effects section.

Newly added Heavier7Strings VST effects

The added effects are called "HammerMetal" and "MainTank", effects with the kind of heavy distortion unique to heavy metal.

Heavier7Strings new effects preview

"Heavier7Strings" is also explained on our website and YouTube channel,
so please make use of them.

How to Use Heavier7Strings (1): Basic Overview

  1. 1How to Use Heavier7Strings (1): Basic Overview
  2. 2How to Use Heavier7Strings (2): Playing Techniques
  3. 3Heavier7Strings Ver.1.2.1: Installing the Latest Update and Points to Note

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About the author


Daisuke Ito: composer
(Daisuke Ito)

At Sleepfreaks, handles explaining and producing music videos, writing articles, design and planning and development,
teaches band instruments and piano at a private studio, K5-STUDIO,
and also does guide vocals, narration and voice acting, from pop to death metal.

Twitter (Sleepfreaks) ID: @k5_stud1o

Twitter (K5-STUDIO) ID: @k5_studi0

Frequently asked questions

Q1. What effects were newly added in Heavier7Strings Ver.1.2.1?

Two new distortion modules, HammerMetal and MainTank, were added. Both are effects with heavy distortion unique to heavy metal and appear at the bottom left of the effects section.

Q2. Does the sound change after the update?

The sound of the AMP and cabinet modules is unchanged from the previous series (1.1.X). However, sound quality improvements and reduced latency have been implemented.

Q3. How do I check the version after installing?

Click the icon at the bottom right of the GUI to display the information list, and you can check the current version at its bottom right.

Q4. Has the bug that caused problems at different sample rates been fixed?

Yes, the problem from Ver.1.1.5 where the amount of distortion in the AMP module changed at different sample rates has been fixed.