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Grp Synthesizer R24

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Page last updated Aug 10, 2025

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Description

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The Grp R24 is a 8x3 analog step sequencer firmly based on the mighty step sequencer previously developed in Grp A8 and A4 Analog Synthesizers. The new R24 is full of control capability with CV/Gate, MIDI and USB connections. Hardware-wise, is stand-alone self powered, with hardware compatibility for mount on 5U module format; you can use in stand alone with its internal power, or you can install in your Dot.com/Cotk/Moon Modular system. R24 respects electrical and mechanical standards for the above manifacturers. With the appropriate brackets included in the package the machine can be easily installed in a 19 "rack Still, you can use R24’s own cabinet as a “presto-cabinet” for powering and using your spare 5U modules. R24 has 64 internal memories for store and retrieve separate sequences; each sequence can be set in 8x2, 16+8 or 24 mode, with any step lenght user’s selectable. R24 can act as CV/Gate sequencer or as MIDI sequencer, with separate rows for MIDI Note selection and for Key Velocity step adjust.

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AudioCentralMagazine

GRP R24 Step Sequencer Three Parallel Sequences

AudioCentralMagazine

Grp r24 sequencer. Quick demo. Positivity

Duende Synth

GRP Synthesizer R24 Sequencer - First Test

John L Rice

Grp R24 Step Sequencer Accent from Row C

AudioCentralMagazine

GRP R24 Step Sequencer Dual Gate Out

AudioCentralMagazine

GRP R24 - Second Test

John L Rice

Grp Synthesizer R24 Sequencing a Behringer 2600

Vykaar Tones

Reviews

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Critic Reviews

GRP R24 step-sequencer (part 1) - GreatSynthesizers

greatsynthesizers.com

The GRP R24 step sequencer strikes a balance between flexibility and complexity, offering musicians a wealth of features that cater to both analog and digital setups. With 64 memory locations, multiple sequencer modes, and the ability to control various synths via MIDI and CV/gate, it’s a powerful tool for creative expression. However, its intricate design may overwhelm those seeking simplicity, making it less accessible for beginners. While it fills a long-standing gap in the market for versatile sequencers, its steep price tag (approximately $2,499) and potential learning curve might deter some users. Overall, the R24 is a dream for seasoned musicians ready to dive deep into its capabilities.

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GRP Synthesizer R24 Sequencer Hands-On Demo – Synthtopia

synthtopia.com

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Stefan Goldmann

Music Producer

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In a video posted on his Instagram, Stefan Goldmann demonstrates the Grp Synthesizer R24, using it to modulate its own clock for creating unique rhythms.