Version 3.0 updated for Helix firmware 3.1. 

The Matchless DC30 is a fantastic amp and works well for a wide variety of tones It is voiced like an AC30 with a stronger low end and takes pedals very well.

Important note for users running mono: In order to widen the stereo spread, this preset has a 100% mix delay before the amp on path 1B. If you run mono with your Helix, you will need to bypass or delete this block or you will experience some phasing issues when the amps are summed to mono at the output.

HX Stomp Version

HX Stomp version of this preset available here.