Maru Sampler

Maru Sampler is Maru's official player for sampled instruments and drum kits. Play a piano from a MIDI keyboard, trigger a kit from pads, or build an instrument from your own recordings. A bank contains the sounds and their playing instructions; Sampler is the instrument that plays it.

Play in your browser

Start at the Sampler product page, browse instruments or drum kits, and open a sound to play. Choose a preset and use the on-screen keys or pads. A computer keyboard or MIDI keyboard gives you another way to perform; MIDI input depends on browser support. See Playback and MIDI for setup.

No installation is needed for browser playback. On a bank page, use Share → Copy URL to send someone a link to the current sound.

Native app and DAW plug-in

The native Maru Sampler has two uses: a standalone app plays instruments without a DAW, and a plug-in plays them on an instrument track in your music software. Both are players for banks made in Studio, so creating a new kit does not require building a new plug-in.

Public native downloads are upcoming. Check the Apps page for release availability, or contact Maru about early access on your computer.

If you already have a native build, use its Load bank… control to choose a bank folder, ZIP or .mas file. For a folder, keep bank.json and all referenced samples together.

Create an instrument or kit in Studio

Open Studio, create a Sampler bank project and add recordings in Sources. Ask the agent for a musical result, such as a soft keyboard instrument from recorded notes or a kit with closed and open hi-hats. Use Mapping to set the notes and playing ranges, and Preview to play the result.

Presets offer variations of the same material, such as a tighter kit or a softer piano. Another mapping can reuse those recordings for a different keyboard range or pad layout. Follow Create a sampler bank for the complete first journey.

Take the bank with you

In Studio, open Info & export → Export bank. Download MAS creates one .mas bank file containing the recordings, mappings, presets and artwork. Download ZIP carries the same bank content in an extractable archive. These are content files for Sampler; the native app or plug-in is a separate download.

To edit a downloaded bank, import either file through Studio's Sources tab. To share browser playback, publish a saved bank as a public or unlisted instrument page. Review the source recordings' permissions before distributing a bank.

If a bank will not load, check that you are opening a bank rather than the player installer. Keep all samples beside bank.json when using a bank folder, and review any import warnings in Studio. Contact support with the file type, player version and error if it still fails.

For editor details, file contents and import limitations, see the sampler bank reference.