Torso Electronics S4

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.

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.

Features

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.

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 156 x 39 mm (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 Por