The GForce MkII celebrates the extremely rare and highly coveted original dual manual ‘trons, the Mellotron® MkI/MkII and Chamberlin® Musicmaster.

Whilst M-Tron Pro IV continues to focus on the chromatic sounds of the Mellotron M400 and is probably the first ‘tron you’ll want, its GForce MkII sibling is a unique and exclusive library with specialist tools for tackling the rhythms, accompaniments, and unique playing styles found in earlier Mellotrons MkI/MkII and Chamberlins.

Originally conceived as the ultimate Home Entertainment Console, the UK-made 1963 Mellotron MkI/MkII was a dual-manual tape-based instrument. The left manual’s 35 notes replayed a combination of 18 Rhythms and Accompaniments (66 on the GForce M-Tron MkII*), and the right manual (also 35 notes) replayed 18 lead sounds (66 on M-Tron MkII*).

GForce MkII was designed for composers and producers who want access to the evocative tones of the original dual manual Chamberlin®, Mellotron® MkI, and MkII instruments. Special emphasis was placed on the Rhythms and Accompaniments, which capture a moment in time between the 1950s and late 1960s.

Album release date:
9 January 2025

GForce - MkII

Dave Spiers
A track created with the MkI & MkII Bossa Nova Rhythms, together with a variety of Accompaniments and Leads, plus vocals from the man that started it all, Harry Chamberlin. Additional Drums from 43 secs are courtesy of Spectrasonics Stylus RMX.

GForce MkII - Harrys Bossa Nova

Single patch demo
Played across both manuals this contains Chamberlin Flutes in both left and right manuals. However, the left manual has been transposed an octave and because host sync is active it still retains a natural modulation.

GForce MkII - Flutes In Space

Single patch demo
If you’ve watched the legendary Pathé News footage of Eric Robinson and David Nixon, you’ll be familiar with this track created solely with MkII’s Dixieland Rhythm, MkII Trombone Accompaniments and Layered MkII Piano & Vibraphone Lead.

GForce MkII - Pathe - Bye Bye Blues

Mitchell Froom
Mitchell Froom passed us this quick demo track he made using MkII. It's a bit of a mini-masterpiece!

GForce MkII - MF Demo

Dave Spiers
A Chamberlin Foxtrot Rhythm with various Accompaniments including MkI Piano and Clarinet & Sax Accompaniments, MkII Vibraphone and Trombone Accompaniments, plus Chamberlin Do Wah Trombones. All sitting alongside a monstrous kick drum courtesy of Stylus RMX.

GForce MkII - More Beat

Some audio demos from instruments we make

GForce MkII - MF Demo

GForce Software