MUM M8 DSP filter plugin interface by ALM / Busy Circuits

MUM M8 DSP: Low-Pass Filter Plugin Modeled on the Akai S950 Sampler

MUM M8 DSP is a low-pass filter plugin that emulates the filter of the classic Akai S950 12-bit sampler. It adds resonance, overdrive and bit depth reduction, and is available in VST3 and AU formats for Windows and macOS.

VST3AUWindowsmacOS

AVAILABLE ATPlugin Boutique

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01Overview

MUM M8 DSP is built around the filter used in the Akai S950, a 12-bit sampler that many producers still associate with a smooth, warm low-pass sound. The plugin also draws on the developer's MUM M8 Eurorack module, which uses a similar filter design. Beyond the core filter, it adds resonance, gain, clipped overdrive and a bit depth control, so it can move from clean smoothing to gritty, squealing tones within one device.

Best for

Acid bass lines
Lo-fi sampler textures
Gritty synth leads
Drum bus character
Resonant filter sweeps

Developer: ALM / Busy Circuits
Category: Filters
Store: Plugin Boutique

02Key features

What you get

Recreation of the classic Akai S950 sampler filter
Low-pass filter with adjustable resonance
Gain control for driving the filter
Overdrive and saturation for clipped, gritty tones
Clock bleed switch adding hardware-style artifacts
Bit depth control for downsampled, character-rich output
Approved by Mumdance, per the developer

03In depth

Filter Character and Resonance

The core is a low-pass filter that ALM / Busy Circuits describes as smooth and vacuum-like, a quality it says works well on complex source material. Resonance and gain controls let you push the filter toward more aggressive territory. The developer notes that the resonance is intentionally aggressive and can self-oscillate, producing acidic squeals and a grittier sound.

Clipped overdrive and saturation add further edge, so the filter can be driven hard as well as used for gentle shaping.

Clock Bleed and Bit Depth Controls

Two features set MUM M8 DSP apart from a standard filter. The clock bleed switch introduces audible artifacts into the filter path, reproducing some quirks of the original hardware.

The bit depth control downsamples the input for a more character-rich output. Used together with the filter and saturation, it lets you shape lo-fi, sampler-style textures inside your DAW.

04Specs

Will it run?

Formats, systems and requirements as listed by Plugin Boutique. Missing details are left out, not guessed.

Developer	ALM / Busy Circuits
Type	Plugin
Category	Filter
Formats	VST3, AU
Operating systems	Windows, macOS

05FAQ

Questions, answered

What is MUM M8 DSP based on?

MUM M8 DSP emulates the filter used in the classic Akai S950 12-bit sampler. The developer also says it draws on the design of its MUM M8 Eurorack module, which uses a similar filter.

Which formats and operating systems does MUM M8 DSP support?

MUM M8 DSP is available in VST3 and AU formats. It runs on macOS 11 'Big Sur' or later with a DAW that supports VST3 or AU plugins, and on Windows 10 or later with a DAW that supports VST3 plugins.

What do I need to use MUM M8 DSP?

You need a DAW that supports VST3 plugins on Windows, or VST3 or AU (Component) plugins on macOS. The plugin is an effect and processes audio you route through it.