476 PRODUCTIONS / BASS TONE ENGINE
Heavy tone.Solid underneath.
Undertow brings weight, grit and definition to your bass. Keep the lows solid, shape the bite, and make room in the mix.
One-time purchase · Mac AU & VST3 · Apple Silicon + Intel · Activate two computers
BUILD YOUR SOUND
A foundation.
Then the character.
Start with the source.
Shape your DI or virtual bass with pre EQ, input calibration and a gate. Factory starting points help you find your direction.
Give it a voice.
Compress the lows and drive the mids and highs independently. Drag the crossover points and blend your clean signal back in.
Put it in the mix.
Refine with post EQ, load your own cabinet IR, add bass harmonics and keep the final peaks under control.
SHAPE WHAT YOU HEAR
EQ that responds to your bass.
Pre and post parametric EQ with dynamic bands, adjustable slopes, per-band detector choices and a live spectrum. Use the external sidechain to make space for a kick drum.

Everything has its place.
GOOD TO KNOW
Before you plug in.
Is Undertow an amp simulator?
Its core is a bass tone engine: frequency splitting, compression, distortion, EQ and harmonics. An optional IR loader adds cabinet character when you want it.
Which computers and DAWs does it support?
The current release includes Mac Audio Unit and VST3 for macOS 11 or later, with Apple Silicon and Intel support. Use Audio Unit in Logic Pro or VST3 in compatible hosts. Windows VST3 is still in development and is not included in this release. Check your live host and latency in your own rig before a show.
How does licensing work?
Your purchase includes a license key for up to two computers. Activate in the plugin’s Help → License section. After a successful online validation, Undertow supports a 14-day offline grace period.
What should I know before installing?
The Mac installer is independently distributed and is not Apple notarized. macOS may require approval in Privacy & Security. Read the installation and instruction manual for setup details.
Already own Undertow?
Use your license key on the downloads page. For questions, visit Undertow help or contact 476 Productions.
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Photography, video and audio production for artists, businesses and events throughout Rhode Island and New England.