Tech riderRev. 9 Oct 2026

Signum Audio BUTE Loudness Suite 2

Ch 186.8of 31Audio Mastering Software

1Runs onMac, Windows
2Costsfree trial
3Workflow typeboth
4Loudness standardsITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, EBU R128, ATSC A/85, Sony ASWG, Spotify, YouTube, Apple Check, Hulu, Netflix, TIDAL, AES Streaming Recommendation, US Public Radio (PRSS), Pandora
5Supported plug-in formatsVST, VST3, AU, AAX, AudioSuite

5 lines stated Written from the maker's own pages: signumaudio.com

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Overview

Signum Audio BUTE Loudness Suite 2 is ranked #18 of 31 in audio mastering software on Specifiction. It runs on macOS, Windows. There is no free plan. A free trial is offered.

Signum Audio BUTE Loudness Suite 2 plans and pricing

All plans

Bute Loudness Suite 2 Stereo £199 once Stereo channel support · analyser, true peak brickwall limiter, AudioSuite normaliser · enterprise options by contact signumaudio.com · 9 Oct 2026

Bute Loudness Suite 2 Surround £249 once Stereo and multichannel support · up to 10 channels, including 7.1.2 · future updates included signumaudio.com · 9 Oct 2026

Compared on audio mastering software

Free plan: Nosignumaudio.com
Workflow type: bothsignumaudio.com
Loudness standards: ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, EBU R128, ATSC A/85, Sony ASWG, Spotify, YouTube, Apple Check, Hulu, Netflix, TIDAL, AES Streaming Recommendation, US Public Radio (PRSS), Pandorasignumaudio.com
Supported plug-in formats: VST, VST3, AU, AAX, AudioSuitesignumaudio.com

Facts

Purpose: BUTE Loudness Suite 2 is an audio toolkit for true peak limiting, metering and loudness normalisation in mixing and mastering workflows.signumaudio.com · 9 Oct 2026
Included products: The bundle includes BUTE Loudness Analyser 2 with an integrated True Peak Limiter, BUTE Limiter 2 and the BUTE Loudness Normaliser application.signumaudio.com · 9 Oct 2026
Standards and presets: Built-in presets cover standards and recommendations including ITU-R BS.1770, EBU R128, ATSC A/85, Sony ASWG, Spotify, YouTube and Pandora.signumaudio.com · 9 Oct 2026
Limiter: The True Peak Brickwall Limiter is designed to catch True Peak overshoots, and the product page describes its limiting and normalising as faster than real time.signumaudio.com · 9 Oct 2026
Analyser features: The analyser includes a custom warning system, history overview and graph, DAW sync for automatic re-metering, and multiple meter ballistics.signumaudio.com · 9 Oct 2026
Audio formats: The suite supports VST, VST3, AU and AAX plugin formats, including AudioSuite for Pro Tools.signumaudio.com · 9 Oct 2026
Operating systems: The product page lists Mac OS X 10.9 or higher and Windows 7 or higher as compatible systems.signumaudio.com · 9 Oct 2026
Surround support: The Surround version supports stereo configurations and multichannel formats including 5.1, 7.1 and up to 10-channel Atmos.signumaudio.com · 9 Oct 2026
Trial: The Stereo and Surround Suite trials are free and last 14 days.signumaudio.com · 9 Oct 2026
Support: Signum Audio directs customers with product issues to [email protected].signumaudio.com · 9 Oct 2026
Privacy and security: Signum Audio's privacy notice says it cannot guarantee absolute security for personal information and describes its protection as commercially acceptable means.signumaudio.com · 9 Oct 2026
Intended users: The product page lists mixing and mastering, post-production and broadcasting, and gaming audio among its applications.signumaudio.com · 9 Oct 2026