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"Scaler 2 is a triumph, whether you’re buying new or upgrading, it’s an absolute steal."Sound On Sound. Sound on Sound are one of the oldest and respected audio engineering publications in the industry.

"A must for anyone who struggles with chord structures, needs fast workflow, or makes music on the go a lot."Breakage. UK Bass Music Producer: Critical Music, Planet Mu, Bassbin.

"Scaler offers simplicity while also teaching it's users root level musical principles."Deadbeat. Deadbeat is Scott Monteith, a Canadian musician, sound designer, and musical technology educator based in Berlin.
Empower the Composer Within
Scaler 2 is an inspirational and powerful music theory workstation that gives you access to a world of new ideas, expressions and melodies. With powerful detection of MIDI and audio, Scaler 2 can determine what key and scale you’re in and suggest chords that match your music. The plugin helps you discover the perfect melody with performance expressions, and can even suggest ways to change from one key to another.
Scaler 2 makes finding chords and progressions intuitive and fun! It’s a comprehensive but easy to use toolbox that will help anyone make better music.
Upgrade Note: This is an upgrade for owners of Scaler 1. The full version of Scaler 2 is also available.
Benefits
- Discover your music’s key and explore alternative scales, modes and chord sets
- Choose from hundreds of keys and modes, quickly build progressions in the sequencer
- Over 200 artist chord sets from the likes of Carl Cox, MJ Cole, The Temper Trap, Mitekiss, CeCe Rogers and Mike Huckaby
- Over 300 unique genre, common and mood-based chord sets such as Chill, Drum & Bass, Jazz, Cinematic, EDM, Metal…
- Browse chord variations to get suspended chords, extended chords, dominant sevenths and jazz chords
- Create unique chords by searching & selecting from the circle of fifths or by entering note by note on your keyboard in Chord Create / Editor mode
- Play melodic expressions with over 200 phrases, performances and rhythms by professional musicians across various time signatures
- Use the arpeggio or strum features to perform in real-time and synced to your DAW
- Discover chord substitutions that lend variety to your progressions
- Experiment with different chord voicings to spread notes across the keyboard
- Export MIDI to your DAW simply by dragging and dropping
- Assign any VST / AU instrument to Scaler 2 to control your favourite synths or use over 30 internal electronic, acoustic and orchestral sounds
- Play and record one-finger chords and melodies using Scaler 2’s Bind MIDI function
- Establish your scale with audio detection as well as MIDI detection
- Generate bass lines adapted to your current scale and chords with Bass Mode
- Generate melody lines adapted to your current scale and chords with Melody Mode and Sequence Mode
- Change keys, performances, melodies and basslines on the fly by MIDI Mapping to your computer keyboard or MIDI Controller
- Get more natural-sounding melodies and expressions with the humanise and quantise function
- Navigate between modes and pages using keyboard commands or UI buttons
What's new in version 2?
- Redesigned from the ground up with over 600 new chord sets, hundreds of new scales, and 45 new instruments
- Play melodic expressions with over 500 phrases, performances, sequences, basslines, melodies and rhythms by professional musicians
- Establish your scale with audio detection as well as MIDI detection
- Keys Lock helps you create emotive melodies by locking keys to your chords
- MIDI Capture lets you perform inside Scaler 2 and then export the results as MIDI
- Modulation suggestions give you new ways to reach musical destinations
-
Suggest Mode - Scaler 2 helps you add complexity and artistry to
your chord progressions - Get more natural-sounding melodies and expressions with the humanise function
- Edit Modes for adjusting length, velocity, inversion, octave, timing and performances more per chord in a pattern
- Pad View helps you to arrange and play through multiple patterns and key switch between them
- Audition new progressions in context with DAW Sync playback
- Voice Grouping can keep your chords within a certain range for voice leading
- Chord editing and moving tools include lasso, drag n drop, replace and insert
-
Midi Mapping allows you to change, performances, scales and
patterns on the fly - More than 100 new expressions in triplet feel and across several time signatures including 3/4, 5/4, 6/8, 12/8
- New Chord Create / Editor mode - create chords by searching & selecting from the circle of fifths or by entering note by note on your keyboard
How it Works
Detect
Scaler 2 can listen to incoming MIDI or audio data and detect the key your music is in. After this, it will suggest chords and chord progressions that will fit with your song. Scaler 2 can send MIDI to a virtual instrument in your DAW, and it has 45 onboard instruments to play with as well.
Chord Sets
Scaler 2 comes with over 400 song and genre-based chord sets and over 200 artist chord sets to inspire new progressions and melodies; plus, choose from hundreds of scales and modes to get your creative juices flowing. Simply drag the chords you want into the sequencer to build a pattern that’s unique to you.
Explore
Explore alternative chords that’ll fit with your progression, with loads of suggestions, voicings, chord extensions and variations on particular chords to help you choose the perfect feeling with every step of your song.
MIDI Capture
New Audio Detection Technology means you can detect and analyse chords and scales from existing audio sources. With MIDI Capture, you can record Scaler 2’s output – whether you’re clicking keys or chords, or playing progressions – in order to drag the resulting MIDI to outside the plugin.
Create
Suggest mode gives you chords compatible with your chord progression. Lock keys to your chords to create complex melodies by intuitively moving around on your MIDI controller. Humanize Scaler 2’s performance by introducing variations to velocity and/or timing. Voice Grouping profiles lets you automatically invert notes to restrict playback within certain octaves or by using open voicing.
Edit
Edit Mode lets you dial in Duration, Octave, Inversion and more parameters per chord, and there are new ways to edit chords when right-clicking. DAW Sync links your chord patterns to your DAW’s playback, making it easy to audition new progressions or alter existing chord patterns alongside your DAW project. Pad View makes it easy to construct entire arrangements, moving chords and whole progressions on a higher level.
Modulation
Scaler 2 makes Modulation Suggestions for movement between your current key and a destination. The majority of suggestions have been sourced from professional musicians, and some are generated algorithmically.
Performance
With Performances, Phrases, Sequences, Basslines, Melodies and Rhythms created by real pianists and musicians, Scaler 2 isn’t just about creating chords and arpeggios – it can lay down melodies as well. Over 500 Expressions let you experiment with riffs and melodies, which can be locked to notes of your scale or a chord.
What's new in version 2.5.0?
Suggest Mode
- Generate chords compatible with your progression - follow Tonal or Scale relationships to build complex patterns
- Works by analysing your current progression and suggestions based on internal artist based content
- Generate random progressions and get inspired quickly
Guitar Overhaul
- Chord Charts: Displays a guitar chord diagram for any chord in your Section C
- Fretboard Views: New “Scale Degree” and “Scale Interval” views to explore the neck of your instrument
- 5 New guitar-focused Voice Grouping profiles
Content
- 4 New Sounds (Steel Acoustic, Electric Guitar, Retro Electric, Vintage Keys)
- New Expression Mode: Strummed Sequences with 30 strumming patterns and variations
- New Chord Sets (Pop Rock, Contemporary RnB, Pop Ballads, Deep House)
- 20 Synth Sequences
System Requirements
Mac
- OS X 10.8 and later (macOS Monterey compatible)
- 64-bit compatible only
Apple M1 Mac compatibility: Scaler is compatible with M1 machines natively and under Rosetta, we recommend using Rosetta for better stability. Here is a guide on how to start Logic using Rosetta - https://forum.scalerplugin.com/t/how-to-run-logic-pro-using-rosetta/6343?u=ed1
Formats
- AAX
- Audio Units (AU)
- VST2
- VST3
Windows
- Windows 7 and later
- 64-bit compatible only
Formats
- AAX
- VST2
- VST3
Scaler 2 Compatibility
Important Note: Scaler 2 is only 64-bit compatible.
Mac
- Cubase 9.5 - OK
- ProTools 12.8 - OK
- FL Studio 12 - OK (VST, not VST3)
- FL Studio 20 - OK (MIDI routing available from VST2 only)
- Studio One 3 - OK
- Studio One 4 - OK
- Studio One 5 - OK
- Ableton Live 9 - OK
- Ableton Live 10 - OK
- Logic Pro X - MIDI Routing functionality available
- Logic Pro X 10.7.1 running on Mac M1 & macOS Monterey - OK - MIDI routing available when disabling MIDI 2.0 in Logic's Preferences section
- Reaper - OK
- Bitwig Studio 2 - OK
- Bitwig Studio 3 - OK
- Maschine 2 - OK - No MIDI Routing: Use Blue Cat Audio Patchwork for MIDI Routing
- Reason - OK - No MIDI Routing: Use Blue Cat Audio Patchwork for MIDI Routing
Windows
- FL Studio 12 - OK
- FL Studio 20 - OK (MIDI routing available from VST2 only)
- Cubase 9.5 - OK
- ProTools 12.8 - OK
- Studio One 3 - OK
- Studio One 4 - OK
- Studio One 5 - OK
- Ableton Live 9 - OK
- Ableton Live 10 - OK
- Reaper - OK
- Bitwig Studio 2 - OK
- Bitwig Studio 3 - OK
- Maschine 2 - OK - No MIDI Routing: Use Blue Cat Audio Patchwork for MIDI Routing
- Reason - OK - No MIDI Routing: Use Blue Cat Audio Patchwork for MIDI Routing
Important Note: Scaler 2 is only 64-bit compatible.
Any references to any brands on this site/page, including reference to brands and instruments, are provided for description purposes only. For example references to instrument brands are provided to describe the sound of the instrument and/or the instrument used in the sample. Plugin Boutique do not have (nor do they claim) any association with or endorsement by these brands. Any goodwill attached to those brands rest with the brand owner. Plugin Boutique or its Suppliers do not accept any liability in relation to the content of the product or the accuracy of the description. "RHODES" is a registered trademark of Joseph A Brandstetter.
Awards


Product Reviews
Plugin Boutique Scaler 1 Review at Music Radar
Our Verdict It falls flat at the offline export stage, but in every other regard, Scaler is a powerful aid for musicians of all ability levels....
Plugin Boutique Scaler 1 Review at Rekkerd.org
Scaler creative chord composer by Plugin Boutique I’ve had several years of classical guitar training, so I am not unfamiliar with scales, chords...
Plugin Boutique Scaler 1 Review at Andrulian's Blog
Introduction PluginBoutique have introduced Scaler, a unique and inspirational MIDI effect that makes finding chords and progressions intuitive and...
Plugin Boutique Scaler 1 Review at DJ Booth
For producers or songwriters looking to beef up their chord progressions, learn more exotic chords and voicings, or find inspiration from some...
Plugin Boutique Scaler 2 Review at HomeStudioToday
PluginBoutique has just released a new version of Scaler, their popular music theory and songwriting tool. Let’s take an in-depth look at Scaler 2...
Plugin Boutique Scaler 2 Review at Music Tech
A solid chord progression can enhance even the simplest of tracks and turn them into something truly magical. This Scaler sequel from Brighton’s...
Plugin Boutique Scaler 2 Review at Sound On Sound
Scaler 2 is just the thing to get you out of a songwriting rut. A little music theory can be really useful in the compositional stage of a project,...