Developer Carve Audio has released BusBoy ($49), a mixing utility plugin for macOS and Windows. It is currently free until March 2nd, 2026.
BusBoy is best described as a simplified channel strip for stereo buses, but I think it’s also an excellent choice for individual channels.
The main idea here is to help you establish a solid tone quickly. Instead of stacking multiple plugins for filtering, EQ, compression, and limiting, BusBoy brings all of those essentials into a single interface focused on speed.
At the front of the signal chain, you’ll find high-pass and low-pass filters for cleaning up unnecessary low-end rumble or high-frequency noise.
These filters are clean and simple, doing exactly what you’d expect (like removing sub-bass, for example) without adding character or complexity. They’re perfect for tightening up individual tracks or buses before moving on to tone shaping.
Tone shaping comes from a pair of low- and high-shelving EQs. These shelves are intentionally broad rather than surgical. As such, they are more useful for quick adjustments rather than corrective work.
You won’t find detailed parametric control here, but that’s kind of the point. BusBoy lets you work fast and trust your ears. With channel strips, I typically like making small moves that add weight, brightness, or polish to the recording.
The compression section comes next in the chain, offering simple controls that are easy to dial in. There’s also a mix knob that lets you apply parallel compression directly within the plugin.
This works especially well on drums, where you can blend in the compressed signal to add density without losing transients. Sidechain support makes the compressor even more flexible for rhythmic material.
A basic limiter sits at the end of the chain. It’s more of a control tool rather than something for aggressive loudness. It catches peaks and helps keep levels under control while maintaining the overall character of the signal.
One feature I really appreciate is the oversampling option, which helps reduce artifacts when pushing the compressor or limiter harder. There’s also a preset browser, which makes BusBoy a good choice if you want to save a few go-to settings for your mixes.
The interface is clean and modern, and I like the overall layout. That said, I find the numeric labels around the knobs a bit busy. I’d prefer fewer or larger values, but that’s a minor gripe in an otherwise well-designed plugin.
BusBoy feels like a very good first channel strip if you don’t already own something more advanced. It won’t replace a fully featured strip from, say, Plugin Alliance or Waves Audio, but it’s practical and does exactly what it sets out to do.
At the time of writing, BusBoy is available for free for a limited time. It typically costs $49, but you can get it for free until March 2nd.
BusBoy is available in VST3, AU, and AAX formats for macOS (10.15 or newer) and Windows 10 systems.
Download: BusBoy ($49 list price, FREE until March 2nd)
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Last Updated on February 3, 2026 by Tomislav Zlatic.
