Four Bands. One Complete Bass Tone.

QuadBass separates your signal into four independently controlled bands: Low, Low-Mid, High-Mid, and High. Each band can be driven, shaped, and balanced around a different part of the finished sound.

Keep the lows clean. Build body through the low mids. Add definition and cut through the high mids. Finish the tone with controlled presence and air.

All the flexibility of a multiband studio chain, inside one plugin.

Hear QuadBass In Action

Arch Echo // Angry Sprinkles Bass Playthrough

Toby Peterson-Stewart // QuadBass Demo

QuadBass // Full Walkthrough

Emulating Geddy Lee’s Tone With QuadBass and Arcadia U7

Shape Every Band Independently.

Each band includes its own:

  • Level

  • Drive

  • Power Amp

  • Solo

  • Mute

Adjust the balance like four separate layers inside a session.

Use Solo to hear exactly what each band contributes. Mute unwanted regions. Push one section into heavy saturation while leaving another controlled and clean.

The four Level controls also act as a broad tonal shaping system, allowing you to rebalance the entire spectrum directly from the main interface.

Fully Adjustable Crossovers Points

Adjust the Low, Mid, and High crossover frequencies to decide exactly where each processing region begins and ends.

Move the Low band upward for a larger clean foundation. Narrow the Low-Mid range for greater separation. Position the High-Mid and High bands around the articulation of the instrument and the needs of the arrangement.

The processing adapts to the bass, tuning, playing style, and mix, not the other way around.

Compression at Every Stage

QuadBass includes three purpose-built compression stages:

Pre Compressor

Control dynamics before the bass enters the four-band engine, creating a more consistent response across the processing chain.

Low-Band Compressor

Lock the fundamental in place independently from the distorted mids and highs.

Post Compressor

Bring the four processed bands together and add final cohesion to the complete tone.

Each compressor exposes a single Threshold control. Attack, release, ratio, and supporting behavior are tuned internally to keep the workflow immediate and musical.

Why QuadBass?

Mix-Ready Bass Tone in Seconds

QuadBass replaces the usual 4-5 plugin bass chain with a single, powerful processor that instantly delivers clarity, punch, and low-end control.

Cuts Through Any Mix

Dial in the perfect balance of bite, growl, and warmth so your bass never gets buried under guitars, synths, or drums again.

Flexible for Any Style

From tight modern metal to warm vintage saturation to clean studio-grade DI enhancement, QuadBass adapts to your tone, not the other way around.

No More Muddy Low End

Four independently driven bands with adjustable crossovers let you sculpt exact frequencies with precision and zero guesswork.

Joe Calderone’s Signature Tone, Built In

Designed by Arch Echo bassist Joe Calderone, QuadBass captures his exact studio workflow, tone shaping, and favorite signal routing, now simplified for everyone.

Learn More

System Requirements

macOS‍ ‍

macOS 10.15 through macOS 26

64-bit VST3, AU, AAX, and Standalone formats.

Native support for Apple Silicon and Intel

Windows‍ ‍

Windows 10 and Windows 11

Available in 64-bit VST3, AAX, and Standalone formats.

Simple Account-Based Authorization

Licensing is handled directly through your account.

No iLok account. No USB dongle. No separate license manager.

Activate Endless Bass directly and manage your licenses from your account at any time.

What artists are saying:

  • "This plug-in is a bass tone gold mine. it’s amazing to be able to dial in vintage sounding gritty tones, modern metal clanky tones, and everything in between without any fuss. Works great on real bass and programmed bass DIs as well! Although it has tons of parameters to play with, it’s still very user friendly to me. It’s all about standing out these days and the versatility in this thing will definitely make your tone stand out and feel specific to you.”

    Adam Bentley (Arch Echo, Mix Engineer)

  • "QuadBass is the fastest path to mix ready bass tone I've come across yet. It lets me tweak everything I need from one interface. The Drive, Power-Amp, and Crossover controls are very powerful, especially in the upper mids and highs. I'm not used to getting this sound this fast. Now my only problem is resisting the urge to keep tweaking when it's already there! 😅"

    Sam Harchik (Aviations)

  • “As soon as I turned on Quadbass I was impressed by how easy it is to obtain an amazing bass tone with just a few tweaks and how versatile the plugin is. It's going to be a constant presence in my signal chain from now on.”

    Matteo Raccone (Omega Zero, Content Creator)

  • “QuadBass is my new secret weapon for bass processing. You can find the tones you need faster, and it is much more multipurpose and versatile than others plugins I have used. From crisp cleans all the way to the most aggressive bass tones ever, you can get it here.”

    Cameron Rasmussen (Sound Struggle)

  • "QuadBass can go on my bass tracks forever. For such a lightweight plugin I'm impressed how much it does for bass compression, tone sculpting, and distortion without overwhelming with options and can glue a bass to the mix easier. I can confidently say QuadBass will replace a messy chain, leaving you to enjoy playing or mixing a tight, bitey bass tone and stop playing with compression settings all day."

    Ro Panuganti (Artist, VGM Enthusiast)

  • "Elevate your bass game with QuadBass, a cutting-edge solution that seamlessly combines user-friendly design with phenomenal sound quality, dialing the right tone it’s easy like Sunday mornings and sounds like pure magic!"

    Filippo Rosati (Omega Zero, Content Creator)