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4ms Stereo Triggered Sampler Eurorack Module , $450.00 - Add to Cart Skip to Product Information

4ms Stereo Triggered Sampler Eurorack Module

20HP Eurorack Stereo Sample Recorder Module
Item ID: 4msSTS
4ms Stereo Triggered Sampler Eurorack Module
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with 4ms. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated October 26, 2026

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4ms Stereo Triggered Sampler Eurorack Module
We Can Get It Fast!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with 4ms. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated October 26, 2026

A Hi-Fi Sample Recorder for Your Eurorack

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Our Product Research Team

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The 4ms Stereo Triggered Sampler (STS) is a 2-channel 20HP Eurorack sample recorder module that can record hi-fidelity stereo files while simultaneously playing two different stereo files. You can load up to 600 samples (into banks of 10) from a microSD card, in a variety of formats. All sample parameters — including pitch in 1V/oct increments, sample file selection, length, and start position — are controllable via CV. You can rearrange samples and banks on the fly using the STS's onboard edit features. Freshly recorded samples can be played back instantly and reversed, re-pitched, and chopped up to your heart's content. You can even bounce down and re-record to a new sample. There is a sample file limit of 4GB each, which still gives you over six hours of stereo sampling at 16-bit/44.1kHz.

Powerful sample control

The Stereo Triggered Sampler provides powerful controls for rearranging and joining samples or creating dynamically resized loops within a larger sample. Each playback channel of the STS is fitted with a Sample File selection knob and CV jack, as well as a Start Position knob and CV jack for controlling where sample playback will begin. A Length knob and CV jack determine how much of the sample is played back — from minuscule grains to percussive hits to longer loops — or the complete file. These tools, combined with the Play Trigger jack and the 1V/oct jack, let the STS generate two complete pitch-tracked multitimbral stereo voices. What's more, the STS also sports a Reverse button and jack for backward playback, and an End Out jack for synchronizing loops or cascading sample playback with other events.

Sync and loop

One of the things Sweetwater Eurorack enthusiasts love about the STS is how easy it is to sync and loop. Hold the Play button down for two seconds to toggle between loop and one-shot. The loop-timing clock will output from the End Out jack. Or to sync the loop to external timing, simply send a clock into the Play Trig input.

Stereo recording

Whether you patched 47 modules to deploy a killer percussive blast or you want to capture a performance of your 4-hour ambient composition, recording high-res files with the STS is easy. Hit the REC button or fire a trigger and a new stereo .wav file will be created on the inserted SD card. By all means, record as many takes as you need — the STS never deletes your files. Rearranging or reordering samples into banks is a piece of cake, even without a computer. You can even load a bank with 10 different variations and immediately use them for playback. The STS records at 16-bit/44.1kHz by default; 24-bit is selectable as an option.

Easy sample loading

Using a computer is optional with the Stereo Triggered Sampler; samples can be recorded directly to the module and placed into the bank of your choosing. But if you have large existing sample banks, the STS's intuitive automatic bank loading features make dragging and dropping your entire sample library a breeze — and you will never have to rename your files! So there you have it — the Stereo Triggered Sampler, from 4ms. Put it in your Eurorack, and dive into superior sampling insanity.

4ms Stereo Triggered Sampler Features:

  • 20HP Eurorack module
  • 2 independent playback channels
  • Intuitive bank and color organization system; no need to rename your .wav files
  • Bank capacity: up to 600 active samples at a time (10 samples per bank)
  • 4GB maximum file size for playback or record
  • Over 6 hours per file at 16-bit/44.1kHz/stereo
  • Includes 32GB microSD card preloaded with over 200 high-quality samples from top musicians and sound designers
  • Included samples from Richard Devine, Wobbly, Moor Mother, Joseph Pailo, Hugo Paris & Marc Kate, Robert Aiki Aubrey Lowe, Russell E. L. Butler, and more
  • Low-noise, low-jitter design
  • Stereo mode: 2 stereo files are mixed together and played at once through the L/R output jacks (L+L and R+R)
  • Mono mode: each file is mixed down to mono and output through the channel's output jack (L+R and L+R)
  • Each channel has controls for sample select, playback pitch, sample start position, playback time, reverse toggle, and bank select
  • SD card is hot-swappable; no power-down required
  • Samples preloaded into memory continue playing while card is swapped
  • Firmware updates via audio file played into STS

Warranty Info

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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.