The S4 is a stereo granular sampler and performance instrument designed for sound explorers, experimental producers, and live performers. With a hands-on interface, rich signal chain, and deep modulation system, the S4 invites you to sculpt, mangle, and reimagine sound in real time.

• 4 modulators per track LFOs, envelopes, random, and envelope followers can modulate any parameter for dynamic, evolving patches.
• PERFORM page with 12 macros Map any parameters to 8 sliders and 4 punch-in FX buttons for expressive live control.
• 128 scenes Save and trigger full parameter and sample snapshots. MIDI Program Change supported.
• Mixer 4-channel stereo mixer with DJ-style filters and master compressor.

Audio engine
4x stereo tracks with a 5-stage signal chain:

• MATERIAL: Play samples from internal memory, record and overdub. Includes 8-voice polyphonic sampler with MIDI control.
• GRANULAR: Shape grains with contour, size, and pitch. Create anything from ambient clouds to glitchy textures.
• FILTER: 48-band resonant filter bank with classic models and morphing modes.
• COLOR: Dual-band distortion, bit reduction, compression, and noise.
• SPACE: Stereo delay and reverb with freeze and multiple delay types.
  

User Interface

• High-resolution LCD color display, 3.5 inch
• 21 tactile RGB buttons
• 9 high-quality endless encoders
  

Hardware

• Internal Memory: 4 GB (expandable via USB)
• Audio Processing: 24-bit / 48kHz stereo
• USB Audio Interface: Class compliant, 10 in / 10 out

Physical

• Matte black aluminum casing
• Dimensions: 242// x 156mm x 39mm / 9.5” x 6.1” x 1.5”
• Weight: 820g / 1.8 lbs

I/O

• Inputs: 2x 6.3 mm (1/4”) jack
• Outputs: 2x 6.3 mm (1/4”) jack, 3.5 mm TRS headphone
• MIDI: 3.5 mm TRS (Type A) in/out
• Sync: 3.5 mm analog sync in/out
• USB-C Port