The S-4 can read .wav and .flac file formats in 8, 16, 24 and 32 bit. When loaded, samples will be converted to stereo 48 kHz.

Recordings made on the S-4 can be stored locally to the hard drive, and used for loading into TAPE or POLY or for transferring to a computer.

• Navigate to the TAPE device, and use [CTRL] + Save to save the current TAPE buffer.
• Navigate to MIX, and use [CTRL] + Rec Main to record the main output of the S-4. The recording can be stopped when pressing again.

When recording audio on the S-4 the files are stored in two different folders:

• SAMPLES/BOUNCES when saving the buffer from the TAPE device.
• SAMPLES/RECORDINGS when recording the main out from MIX.

Files are stored in 48 kHz 24-bit stereo .wav format. The TAPE buffer is automatically stored in the project file, and will not need to be saved manually in order for a project to load.

To transfer files to the S-4, USB Mass Storage mode needs to be enabled in the Config menu after connecting the S-4 to a computer via USB.

USB Mass Storage mode is enabled by pressing [CONFIG] -> SYSTEM -> USB MASS STORAGE.

When inserting a USB flash drive into the S-4, a folder in the Sample Browser becomes available called USB DRIVE. The samples on the drive can be accessed from this folder. 

The USB flash drive needs to be formatted to either exFAT or FAT32 in order for it to be used with the S-4. You can not copy the samples from the USB flash drive onto the S-4.

To delete a project or sample from the S-4, navigate to the desired file and press [CLEAR]. A confirmation will appear before the file is deleted.

The Mosaic device on the S-4 can use up to 128 grains per track.

If samples transferred onto the S-4 contain a number followed by “bpm” or “BPM”, the Tape device will automatically set the Tempo parameter to the specified BPM. Example:

“mysample_128bpm.wav”

The S-4 provides an USB audio interface with 10 in / 10 out channels for multitracking. The output is routed as follows:

Out 1/2: Stereo master

Out 3/4: Track 1

Out 5/6: Track 2

Out 7/8: Track 3

Out 9/10: Track 4.

Audio over USB currently works in these cases:

• When connecting the S-4 to a DAW and iPad
• Have been confirmed to work with Zoom H8
• A selection of small USB audio microphones and speakers

We are planning to expand support for other USB audio interfaces in a future update.

Devices can be bypassed by using the [CTRL] + Device Slot button combination. Navigate to and select BYPASS by continually pressing the Device button, turning the rotary encoder, or pressing the UP and DOWN arrows on the Action Buttons. Let go off [CTRL] or press SELECT to disable the device.

To quickly revert a parameter back to its original state, hold [CLEAR] and press or turn an encoder. Holding [CLEAR] also gives the option to clear all modulation, parameters or device using the Action Buttons.

The POLY device can use up to 8 voices simultaneously. POLY does not receive pitch bend or aftertouch at the moment. The MIDI channel can be configured for each track in the Config menu. 

There is currently no way of cueing tracks on the S-4 before it is routed to the main output. A workaround for this, is to use the USB outputs to route and mix the tracks externally in a DAW.

To enable Keylock use [CTRL] + Keylock in the TAPE device. With Keylock enabled, adjusting the project Tempo or the Tempo parameter in the TAPE device, the pitch of the sample will not change.

The S-4 supports samples of up to 6 minutes in length in either the TAPE or POLY device buffers per track.

All parameters on the S-4 are available to control using MIDI CC. The individual tracks correspond to the MIDI Channel set in [CONFIG] -> TRACK -> MIDI CHANNEL. By default the tracks receive MIDI on MIDI Channel 1, 2, 3 and 4.

See manual p. 120-124 for MIDI CC values.

The S-4 does not yet have MIDI sync as for V1.0.0, but is a highly prioritized feature that will arrive in a future update.

The S-4 does not yet have Ableton Link v1.0.0, but will arrive in a future update.

The S-4 requires a .zip file for performing firmware updates. Please make sure not to unzip the downloaded file before transferring it to the S-4.

We frequently encounter issues with Safari automatically unpacking zip files post-download. To prevent this, please uncheck the box in Safari called:

“Open files after downloading” in - Settings -> General

a) Use the bug rapport channel on our Discord
b) Please send us a mail to support@torsoelectronics.com

• Describe the bug
• When does it happen / steps to reproduce
• On which firmware version
• If external gear is connected: what is it and how is it connected

Feature requests are very welcome. Please the feature request channel on our Discord and check if the request has been made before.

The best way to stay up to date is to joining our discord and signing up news to our newsletter.

Here is a script for debricking your S-4.

You will need a USB-C flash drive. You can also use a USB-C hub.

Please note: The script will delete data on the S-4 (projects, samples, factory samples), but a backup will be placed on the USB-drive.

1) Download zip from https://downloads.torsoelectronics.com/s-4/support/s4diagnostics.zip
2) Extract the contents and copy “s4diagnostics” to your USB-drive
3) Insert USB-drive, then insert DC power. The script will automatically start.
4) The script is finished, when the screen shows “Please remove USB disk and restart S-4".

You can now transfer your projects and samples on to the S-4 again, and reinstall the factory samples.

1) Download zip from:
https://downloads.torsoelectronics.com/s-4/factory-samples/S-4-FACTORY-SAMPLES-v1.0.0.zip
2) Connect the S-4 to your computer and enter USB Mass Storage mode.
3) Transfer the downloaded zip onto the S-4.
4) Eject the S-4 from your computer, and navigate to Config -> System -> Install Factory Samples.

If your T-1 got bricked during a firmware update you will need to perform a manual firmware upload. Follow the instructions below to perform a manual firmware upload:

• Run from the menu bar of T-1 Config: “Tools” → “Download Firmware”
  This will place a .zip in your download folder
• And then “Tools” → “Upload Firmware”
  Select the downloaded .zip in the pop-up dialog
• The script will now upload firmware to your T-1, it takes about 2 minutes.

NOTE: If automatic port detection fails, follow the on screen instructions to manually enter the serial port.
macOS:  It will be called something like “/dev/tty.usbmodemXXXXX”
Windows: It will be called something like “COMxx”, select the one with baudrate = 115200 or 460800

There are two known reasons for this behavior.

1. T-1 got bricked during a firmware update.  

- To fix this you can flash the firmware manually.

2. One of your saved banks is corrupt, causing the T-1 to keep crashing upon startup.

- To fix this you can do a factory reset, which will erase all banks and settings

Make sure that you are following these steps before updating:

• You have the latest version of T-1 config installed.
• You have connected the T-1 directly to your computer without any usb-hubs.
• You have removed all MIDI cables from the T-1.
• You are not sending any MIDI including clock via the usb.

If the process keeps failing see “How do I perform a manual firmware update” to update to the latest version included in the T-1 Config tool.

Check that your T-1 is appearing as a midi device in your DAW and is responsive when powered up. If this is the case here are some things you can try to make T-1 Config load:

• Make sure that you have the latest version of T-1 config installed.
• Perform a manual update to ensure your are running latest firmware.
• Reload the Config app by pressing “CMD+R”/”CTRL+R” or “View” → “Reload”.
• Unplug and replug T-1 directly to your computer ( avoiding any usb-hubs).

If any other external midi devices are connected, try to disconnect them and then go to 1. and 2. 

• Try flipping the usb-c connector.

Follow the instructions below to boot your T-1 in safe mode:

• Hold [ CTRL ] while plugging in power to your T-1. You can release the button once the first track button LED is lit in orange.
• Your T-1 should now boot with an empty bank.

TIP: Banks are not automatically loaded in safe mode, so you can use this to check if you have a corrupt bank

On the T-1, a factory reset is done by erasing all banks and settings:

• Run from the menu bar of T-1 Config: “Tools” → “erase banks and settings”
• The script will now erase the file system on your T-1.
• After the process is completed the T-1 will reformat with the LEDs lit in orange. This can take up to 1 minute before the reformatting is completed.

Tip: If your T-1 crashes upon startup, it might be due to a corrupt bank. Use safe-mode to check if this is the case, and use factory reset to fix the issue