PreSonus releases major v4.5 update for Studio One

Highlights include reduced CPU load and enhanced MIDI editing.

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PreSonus Studio One 4.5 hero

PreSonus has launched a huge 4.5 update for its Studio One software, adding over 70 new features and improvements. The upgrades range from user-requested features to new, advanced MIDI editing tools.

Here are the highlights:

Reduced CPU load

This was one of the most requested tweaks from Studio One users. With the update, PreSonus claims to have reduced CPU load by 70% for all virtual instruments within a multi-instrument, and by 50 per cent for third-party instruments (e.g. Kontakt). Additionally, PreSonus virtual instruments like Mai Tai, Presence XT, SampleOne XT and Impact XT have undergone CPU optimisation.

New MIDI editing choices

PreSonus Studio One 4.5 Midi

Studio One v4.5 is designed to speed up MIDI editing. This is achieved by a fresh Note Actions menu that is touted to be cleaner and more intuitive when it comes to editing and composition. On the refreshed menu are also new note editing options for instruments, including Randomize, Apply Scale, Mirror and more. For quicker access, these editing options can be assigned to keyboard shortcuts or used as part of a Macro command, according to the brand.

Versatile input channel

PreSonus Studio One 4.5 hardware controls
Hardware controls in Studio One 4.5

The new-look input channel mixer is designed to grant you more flexibility and control when gain staging. It achieves this with updated hardware preamp controls – not on all PreSonus audio interfaces – as well as new input gain and polarity controls for each software input.

With both hardware and software gain controls at your fingertips, you’ll be able to drive a hardware preamp harder while still maintaining control over the levels actually recorded to disk, the brand claims.


V4.5 improves on the import/export capabilities of Studio One. You’ll now be able to export video – yes, video – in different formats while simultaneously having the mixdown embedded. On the audio front, Studio One now supports variable-bitrate encoding for MP3, AAC and ALAC, and also lets you export in mono.

As a nod towards creative sharing, you can now import/export entire I/O setups, which should make collabs on mobile or multiple interfaces smoother.

Here’s an overview of the update’s new features:

For download info and a rundown of all the new features, head over to


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