Koala Sampler

Koala Sampler—developed by elf audio—is recognized as a powerful, streamlined mobile sampling instrument. Engineered deliberately to remove technical friction from beatmaking, Koala turns any Android smartphone or tablet into a tactile sampler reminiscent of classic Roland SP-404 or Akai MPC units. Acclaimed by hip-hop producers such as Flying Lotus, Koala prioritizes instant creative flow over deep menu navigation.

Koala Sampler relies on a pad-based interface capable of holding up to 64 distinct audio samples across color-coded banks. Users can record ambient audio using their device's built-in microphone, sample external line inputs, or import existing audio files directly. One of Koala’s sophisticated modern technological additions is its integrated on-device AI Stem Separation engine. This tool allows creators to import any mixed song file and automatically demix it into isolated audio stems: drums, bass, vocals, and remaining harmonic instruments.

Once samples are captured on the pads, producers can shape audio parameters on a per-sample basis, tweaking start/end points with waveform editing handles, altering gain, attack, release, tone, pitch, and playback modes (Normal, One-Shot, Loop, Reverse). Furthermore, Koala incorporates an internal resampling engine. Users can route any pad performance or sequence playback through its 16 DJ mix performance effects (including bit-crusher, comb filter, stutter, pitch-shift, ring modulator, and resonant filters) and capture the processed output directly onto a new sample pad in real time.

In addition to its base features, the application offers an optional upgrade known as the Samurai In-App Purchase. Samurai unlocks professional-tier production capabilities: four time-stretching algorithms (Modern, Retro, Beats, Re-pitch), a high-resolution MIDI piano roll editor, automatic sample chopping (auto, equal, lazy chop), and Pocket Operator sync output. With full external MIDI CC controller mapping and lossless 16-bit WAV audio exporting (utilizing dithering algorithms), Koala Sampler serves as a comprehensive music production station.