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Ample Bass Upright 4.0 for Mac

Ample Bass Upright 4.0 for Mac

Mac Audio
Updated Nov 4, 2026
Mac Audio • Updated Nov 4, 2026

Ample Bass Upright 4.0 for Mac brings Ample Sound's double bass instrument onto the version 4 engine. The upright bass is one of the most expressive instruments in jazz, blues and funk, and this library aims to keep that soul intact in software form, from soft fingerstyle walking lines to the woody thump of a ballad accompaniment.

The recording uses three microphones — neck, body and room — alongside a DI feed, and the mixer lets you balance them in stereo or mono modes to move between an intimate close sound and a full ensemble image. Version 4.0 adds the Riffer 4 composition tools to that established sound set. It remains a paid instrument from Ample Sound, not a free full version; the official page carries the trial and the current licence price.

Key Features

  • 4.26 GB upright bass library with a Fingerstyle playing style and per-position sampling
  • Slide system built for fretless instruments, with polyphonic legato at any interval and speed
  • Neck, body and room microphone signals plus DI, with two stereo and two mono mix modes
  • Riffer 4 editor with dual piano-roll and tab views, string visualisation and full MIDI import and export
  • AU, VST2, VST3, AAX and standalone on macOS 10.15 or later, for Intel and Apple Silicon Macs

How to Download

  1. Download from the official site
  2. Try the trial build or purchase the licence, then download the Mac installer from your Ample Sound account.
  3. Install the library to an internal drive or fast external SSD, activate online, and load the AU or VST version in your DAW.

Can it play convincing walking bass lines?
Yes. The combination of detailed sustain samples, realistic slides and the Riffer's string-aware fingering makes walking patterns in jazz and blues feel natural rather than mechanically repeated.

How much disk space does it need?
Allow over 10 GB of free space for installation. Ample Sound recommends keeping the library on an internal drive or an SSD connected over USB 3.0 or faster, USB4 or Thunderbolt.

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