4ms Stereo Triggered Sampler
Dual stereo sampler with recording, CV, and 600 samples
20 HP Eurorack module
The Stereo Triggered Sampler (STS) is a high-fidelity two-channel stereo audio recorder and playback module that can store up to 600 samples on a microSD card and play two different stereo files simultaneously. It offers deep CV control over pitch, start position, length, and sample selection, with on-board editing for loop/trim points, gain, and sample organization. Its musical character ranges from precise one-shot triggering and melodic 1V/oct playback to granular scrubbing, looping, and live recording of performances.
Features
- Two independent stereo playback channels can play any of 600 samples simultaneously
- Recording channel creates stereo WAV files directly onto microSD card for immediate use
- Supports WAV files up to 96kHz/32-bit/stereo
- Up to 600 samples loaded at once (10 per bank, 60 banks)
- Intelligent file system: drag folders onto card to create banks, folders named with colors load into color banks
- 1V/OCT pitch tracking with -10 to +4.3 octave range per channel
- Start Pos CV and knob set loop start point (0-100% of file)
- Length CV and knob set loop end point; under 50% applies percussive envelope; under 1% creates grains
- Reverse button and trigger jack toggle forward/backward playback per channel
- End Out jack fires +10V trigger on loop end, restart, or stop
- On-board Edit mode: set loop/trim points via Scrub Start/End, adjust gain 10%-500%
- Copy feature assigns same file to multiple slots with independent loop/gain settings
Controls & Jacks (51)
- Length (Left) — Sets the loop/playback length for left channel; below 50% applies decay envelope
- Sample (Right) — Selects which sample slot (1-10) to play on right channel
- Start Pos. (Left) — Sets the starting point in the sample for left channel playback
- Length (Right) — Sets the loop/playback length for right channel; below 50% applies decay envelope
- Pitch (Left) — Sets playback pitch for left channel; ±4 octaves range
- Start Pos. (Right) — Sets the starting point in the sample for right channel playback
- Sample (Left) — Selects which sample slot (1-10) to play on left channel
- Pitch (Right) — Sets playback pitch for right channel; ±4 octaves range
- ▶ Play (Left) — Trigger input to start/restart left channel sample (>1.6V rising edge)
- End Out (Left) — Outputs +10V trigger when left sample loops, restarts, or stops (13ms pulse typical)
- OUT (R) — Right channel audio output; in stereo mode outputs right channels from both samples
- Gain (Right) — Edit mode: adjusts sample gain from 10% to 500%
- ▶ Play (Right) — Trigger input to start/restart right channel sample (>1.6V rising edge)
- Length CV (Left) — CV input for left channel playback length (0V to +5V, adds to knob position)
- PLAY (Left) — Starts/restarts left channel sample; hold 0.5s to toggle loop mode
- Length CV (Right) — CV input for right channel playback length (0V to +5V, adds to knob position)
- 1V/OCT (Left) — 1V/octave pitch CV for left channel (-5V to +5V range)
- 1V/OCT (Right) — 1V/octave pitch CV for right channel (-5V to +5V range)
- Bank (Left) — Cycles to next bank on left channel; hold Reverse+tap for previous bank
- Start Pos CV (Left) — CV input for left channel start position (0V to +5V, adds to knob position)
- End Out (Right) — Outputs +10V trigger when right sample loops, restarts, or stops (13ms pulse typical)
- Reverse (Left) — Toggles reverse/forward playback on left channel
- OUT (L) — Left channel audio output; in stereo mode outputs left channels from both samples
- PLAY (Right) — Starts/restarts right channel sample; hold 0.5s to toggle loop mode
- Start Pos CV (Right) — CV input for right channel start position (0V to +5V, adds to knob position)
- ▶ Reverse (Left) — Trigger input to toggle reverse/forward on left channel
- Reverse (Right) — Toggles reverse/forward playback on right channel
- RECORD (Right) — Right channel audio input for stereo recording; mirrored to left if unpatched
- RECORD (Left) — Left channel audio input for stereo recording
- REC — Arms recording (hold 0.5s) and starts/stops recording
- ▶ Reverse (Right) — Trigger input to toggle reverse/forward on right channel
- Sample CV (Right) — CV input for right channel sample selection (0V to +5V, adds to knob position)
- Sample CV (Left) — CV input for left channel sample selection (0V to +5V, adds to knob position)
- ▶ Rec — Trigger input to start/stop recording
- Sample
- Bank (Right) — Cycles to next bank on right channel; hold Reverse+tap for previous bank
- REC Bank — Selects which bank to record into
- Next File
- Monitor
- Revert
- JL
- Scrub Start — Edit mode: sets trim/loop start point for right channel sample
- Scrub End — Edit mode: sets trim/loop end point for right channel sample
- Gain — Edit mode: adjusts sample gain from 10% to 500%
- Sample (REC) — Selects which sample slot (1-10) to record into
- Edit Sample — Enters edit mode for gain, loop/trim points, and sample assignment
- Monitor LED — Blue LED that lights when monitoring is active (record input is routed to outputs)
- Busy — LED that flashes when the SD card is being accessed for recording or reading
- Reverse CV (Left) — Trigger input to toggle reverse/forward on left channel
- Reverse CV (Right) — Trigger input to toggle reverse/forward on right channel
- Rec CV — Trigger input to start/stop recording
How-To Guides
- Save Sample Bank/Slot Assignments
- Undo Changes to One Sample
- Revert One Bank to Last Saved
- Revert All Banks to Last Saved
- Rebuild Index File (Factory Reset Organization)
- Load WAV Files onto microSD Card
- Record a New Sample to a Bank Slot
- Basic Sample Loop
- Granular Time-Stretching
- Melodic Sequenced Sampler
- Self-Clocking Ping-Pong Loop
- STS as Master Clock Source
Explore the interactive Stereo Triggered Sampler panel on BleepDex — tap any control to learn what it does.
