• A simple-to-use vocal stompbox lets you easily create stunning group-sound vocal effects
• Powerful melodic and gang styles give you large group vocals using your voice alone
• No key or scale to set – just sing
• Simple three-knob control gets you up and running in seconds
• High-quality, low-noise mic preamp for pristine vocals

• On/off foot switch for quick performance control
• Rugged, road-worthy construction for years of dependable use
• 3-Year Warranty Program*
• Designed and engineered in Canada

Magic at Your Feet

There’s nothing like having a large and enthusiastic audience singing along with you. CRITICAL MASS puts that magic right at your feet in an easy to use stompbox.

Sing Along Style

Whether you’re pounding out arena rock-style anthems or leading worship at your church, having group vocals on demand allows you to set the mood and engage your entire audience. Choose from “melodic” or “gang” style vocals that suit any style of music with no key or scale input required.

Studio-Grade Reverb

Reverb simulates a physical space, allowing your voice to fit into the music perfectly. Whether it’s the ambience of a small room, 
or the massive reverberation of a concert hall, CRITICAL MASS’ 3 vocally tuned reverbs always brings out the best in your voice.

Personal Sound Tech

CRITICAL MASS’ Adaptive Tone (equalization) with compression, de-esser and gate automatically control the timbre and shape of your sound, ensuring every note is pristinely clear and intelligible. When the crowd hears exactly what you’re singing, they can join in – and there’s nothing better than that!

Ease of Use

You’re a singer first and foremost, so getting knee-deep in technology probably isn’t what your gig calls for. That’s why CRITICAL MASS automatically sets your mic gain to the optimal level, allowing you to concentrate on giving your best performance – night after night.

Power Options

CRITICAL MASS gives you the option of either plug-in power via the optional POWERPLUG 9V adapter – or battery operation for those occasions when you’re just doing a short set, or house power isn’t readily available.

Your Best Performance

Whether you’re playing at the local tavern or a huge festival, your vocals always deserve special attention. CRITICAL MASS gives you the tools to always sound your best with vocal doubling, state-of-the-art reverb and automatic pitch correction – all in an ultra-simple stompbox designed to elevate your performance to the next level.

Experience CRITICAL MASS at your local TC HELICON dealer, or get yours online today.

VoiceSupport - the Tool That Grows with You

VoiceSupport gives you new firmware updates and bug fixes. Download it now on a Mac or Windows computer with a USB input.

More Mic, More Control

Now you can control your effects from a mic engineered for the sonic realities of modern vocal performance. Add the TC HELICON MP-75, the Sennheiser e835 FX or use the main control button on the TC HELICON MP-76.

*Warranty details can be found at music-group.com.