Denoiser Classic is a noise-reduction plug-in offered by Bertom Audio. Noise reduction is processing that reduces the “hiss” of white noise or the sound of equipment that got into a recording. This product uses a “pay what you want (zero is allowed)” model, so you can get it for free. This page covers how to get it, what it can do and its supported formats, using only the maker’s official information.
Disclosure: this site uses affiliate programs. The fact that Denoiser Classic is available for free, and its features and formats, were checked on the maker’s official page around 2026-10-16. Terms of distribution can change, so please check the official page before you download.
How to get it
- Open the Bertom Audio product page from the “official site (free)” link below.
- Press the “GET DENOISER CLASSIC” button on the page. The official page says it is distributed through the payment service “Lemon Squeezy”.
- The amount is on a pay-what-you-want basis (Pay What You Want). The official page states clearly that this includes free. If you like it, you can also pay to support development.
- Download the file that matches your OS and install it.
- Rescan plug-ins in your DAW (recording and production software) and load it on the insert (the place where you put effects) of the track you want to reduce noise on.
Download link: Bertom Audio official site (available for free)
What is Denoiser Classic?
According to the official page, it is a noise-reduction plug-in without latency that can be used for music, post-production (finishing the sound for video) and live. It is explained as not limited to processing voice, and usable on a variety of sounds.
Main features (per the manufacturer)
- Traditional workflow (per the manufacturer): Described as a “Traditional workflow”. It is the type where you adjust with basic knobs to match the amount of noise.
- Low CPU usage (per the manufacturer): Low CPU usage. It is built to put little load on your computer.
- Zero latency (per the manufacturer): Zero latency. Since the processing adds no delay to the sound, it may be easy to use while recording or live.
- No FFT (per the manufacturer): FFT is a method that splits sound by frequency to process it, and using it can cause a characteristic kind of sound degradation. The maker explains that there is “no FFT and the artifacts (unnatural sounds) that come with it”.
- Not limited to voice (per the manufacturer): Not limited to voice processing.
- Automation support (per the manufacturer): Fully automatable. You can record the movement of the knobs over time and make them change.
The same maker also has a higher-end version, “Denoiser Pro”. According to the official page, in addition to the features of Denoiser Classic, it has per-band thresholds and an “adaptive mode” that is handy when the amount of noise changes over time. Denoiser Pro is paid and has a trial version.
Supported formats and system requirements
According to the official page’s compatibility table, they are as follows.
- Windows 7 or later (x86-64): VST3 and AAX
- macOS 10.13 or later (x86-64): VST3, AU and AAX
- macOS 10.13 or later (arm64, that is, Apple Silicon): VST3, AU and AAX
- Linux (glibc 2.27 or later; x86-64 and arm64): VST3
- The combinations in the official compatibility table are the four above.
According to the official page, it is not a stand-alone app and needs a compatible host. The latest version is shown as 3.0.11. If your OS is not supported, the page says an older version may work.
Who it may suit
- People who want to try reducing the hiss that got into a recording a little, with a free plug-in.
- People looking for noise reduction they can use while recording, without delay.
- People who want a plug-in that runs lightly.
- People who want a tool they can use on instruments and room sounds as well as voice.
Tips for using it
From here on, these are general ways to use noise-reduction plug-ins.
- Reduce noise as much as you can at the recording stage: Noise reduction is not all-powerful. Reviewing the mic position, gain setting and room environment makes the later processing easier.
- Do not overdo it: The more strongly you apply it, the more the voice or instrument also gets cut, and the more unnatural it tends to sound. Look for the minimum amount at which the noise stops bothering you.
- Adjust on a noise-only section: Adjusting while listening to a part with no voice or performance, only noise, makes it easier to match the amount of noise.
- Check together with the other sounds: Noise that stands out on its own may not bother you alongside the other instruments. Listen in the song to confirm.
- Order of processing: In general, noise reduction is often placed before a compressor and similar processors. Reducing the noise before raising the volume with the compressor prevents the noise from being raised along with it.
Things to know before you download
- Always get free plug-ins from the maker’s official website. Files on third-party distribution sites can be outdated or tampered with.
- While the official page says “Pay What You Want (including free)”, it also says that since the product takes time to make, they would like you to consider paying. Whether to pay is up to you.
- Distribution is done through a payment service. Follow the latest guidance on the official page for what to enter and the steps.
- Check first whether your OS and CPU are among the combinations in the official compatibility table.
FAQ
Q. Is it really free to use?
The official page says it is offered on a Pay-What-You-Want basis, “including free”. You can get it for nothing. However, there is also guidance to the effect that people who like it are asked to pay.
Q. What is the difference between Classic and Pro?
According to the maker, Pro has per-band thresholds and an adaptive mode in addition to the features of Classic. Pro is paid and has a trial version.
Q. Can I use it on things other than voice?
The official page says it is not limited to voice processing (Not limited to voice processing).
Related articles
- Free plug-ins for DTM: a roundup
- Noise-reduction plug-ins compared (paid ones included, ranked by the same criteria)
For free options
Pages about free products in this category:
Comments