Getting started
SETUP APP FOR IOS & ANDROID
The Tentacle Setup App for mobile devices allows you to synchronize, monitor, setup and change basic parameters of your Tentacle device. This includes settings such as timecode, frame rate, device name & icon, output volume, battery status, user bits and more. You can download the Setup App here: www.tentaclesync.com/apps
Enable Bluetooth on your mobile device
The Setup App will need to communicate with your TRACK E devices via Bluetooth. Make sure Bluetooth is activated on your mobile device. You must grant the app the necessary permissions as well. The Android version also asks for a ‚location permission‘. This is only needed to receive Bluetooth data from your TRACK E. The app does not use or store your current location data in any way.
Switch on your TRACK E
Before starting the app it is recommended to switch on your TRACK E devices. Pull down the user switch on the side to turn on your TRACK E. The device will indicate powering ON with a blue animation of the level LED. Once it’s powered up, the status LED will be pulsating in white for ‚standby‘.
During operation, the TRACK E constantly transmits status and recording information via Bluetooth.
Add a new device
If you open the Tentacle Setup App for the first time, the device list will be empty. You can add new TRACK E audio recorders and SYNC E timecode generators by tapping on + Add Device. This will show a list of available Tentacle devices nearby. Select the one, you would like to add to the list and tap on it. Hold your Tentacle device close to your phone to finish the procedure. This ensures that only you have access to your Tentacles and not someone else nearby. Once a Tentacle is added to the list, it will appear automatically in the device list, next time the app is opened.
TIMECODE SYNCHRONIZATION
With your Setup App, you can easily synchronize all of your TRACK E and SYNC E devices with one button click. At the bottom of your screen you’ll find the SYNC button.
- Tap on SYNC and a small window will pop up
- Click on the frame rate and select the desired frame rate from the drop down menu
- Time of Day is predefined as a starting timecode. For custom timecode tap on the timecode and choose your desired value.
- Press START and all Tentacles will synchronize one after another within a few seconds
Once your Tentacle devices are synchronized, the app displays Sync Done.
TIMECODE JAM-SYNC
The microphone input can be used to jam-sync your TRACK E with timecode from any external timecode source via cable. Once your TRACK E is turned on, you can jam-sync it as long as there is no other action done (e.g. wireless sync via app or start a recording).
Here are the suitable adapter cables in our online store:
5-pin LEMO to Tentacle:
https://shop.tentaclesync.com/product/lemo-to-tentacle/
BNC cable 90°:
https://shop.tentaclesync.com/product/tentacle-to-90-bnc/
RECORDING
To start a recording with your TRACK E timecode audio recorder, you can start and stop it via Setup App or directly at each TRACK E device. With the Setup App all of your TRACK E devices can be started at once or each TRACK E individually in case you are not working with all of your devices at the same time.
MULTIPLE TRACK RECORDING
At the screen you’ll find two buttons for RECORD and STOP. These buttons start and stop the recording of all your TRACK E devices in your list.
SINGLE TRACK RECORDING
Next to each TRACK E status information in the monitoring list is a REC button as well, which starts and stops the recording just for this single TRACK E.
INDEPENDENT RECORDING VIA USER SWITCH
If you are unable to use the app or don’t want to, you are still able to operate your TRACK E devices directly and independently of a mobile device.
Device list (Setup App)
Once your devices have been added to the list, you can check the most important status information of each unit at a glance. You will be able to monitor the level meter, recording file format, recording time, frame rate, timecode, battery status, Bluetooth range, device icon and name.
If a TRACK E is out of Bluetooth range for more than 10 seconds, the status and timecode of it will be maintained. If the app hasn't received any updates for more than 10 minutes, the message will be Last seen x minutes ago.
Depending on the physical distance of a Tentacle device to your mobile device, the status information in the list will be highlighted. The closer the TRACK E gets to your mobile device the more saturated the color will be.
Remove a TRACK E from the device list
You can remove a Tentacle. TRACK E from the list by swiping to the left (iOS) or long pressing (more than 2 sec.) on the Tentacle (Android).
DEVICE WARNINGS
Devices have to be synchronized: This warning message is displayed, when inaccuracies of more than half a frame occur between all devices in Green Mode. Sometimes this warning can pop up for a few seconds, when starting the app from background. In most cases the app just needs some time to check the information of each Tentacle device. However, if the warning message persists for more than 10 seconds you should consider re-syncing your Tentacles.
SLEEP MODE
In sleep mode, your TRACK E is saving battery and can be remotely woken up. Send all your TRACK E to sleep by swiping up the bottom sheet and pressing the SLEEP button. Wake up the devices by pressing the WAKE button. You can wake them individually by pressing on the TRACK E in the device list. You have to re-sync your devices after wakeup. Also note that connecting a sleeping TRACK E to USB power it off.
APP SETTINGS
Theme | Here you can choose a light or dark them for the setup app |
Audio Monitoring | Here you can select one of two audio monitoring modes: loudspeaker or earpiece monitoring (details see menu setup app > recording > audio monitoring) |
Safe Mode | If this mode is enabled, you need to press the STOP button for 2 seconds before the audio recording stops |
Remove all Added Devices | Here you can remove all devices from the monitoring list at once |
Manuals | Here you can find the Tentacle manuals |
Ask for Help | Here you can send a support request directly to the Tentacle support team |
Acknowledgements | License information of used open-source components |
App Version | Here you can view the current app version |
Device View (Setup App)
Pressing briefly on a TRACK E status information in the monitoring screen, will start a connection to this device and allows you to do the device’s settings.
An active Bluetooth® connection will be indicated by a blue status LED. The TRACK E menu is divided into three categories:
Recording / Playback / Settings
RECORDING
Device Icon | Change the colour of each device icon by tapping on the icon and select the colour you need |
Status | |
Ready | Once you have started a recording, it will display the recorded time of this audio file |
Recording | Shows the recording time |
Disconnected | If the unit is completely turned off |
Timecode | Display The current timecode is displayed here |
Battery Level | The current battery status is shown here |
Recording format | The current recording format – float or 24 bit – is displayed here |
Audio Monitoring | By long pressing the speaker button, audio monitoring will be activated. A pop-up window with two selectable modes will appear. |
Earpiece Monitoring | Monitoring via smartphone earpiece is activated, as soon as the smartphone is held close to the ear. |
Loudspeaker Monitoring | Monitoring via smartphone speaker is activated by clicking on the speaker button. All headphones recommended by the smartphone manufacturer can also be used here. |
Please note
The use of Bluetooth can lead to a device-dependent, time lag during monitoring. This increases if
Bluetooth headphones are also used.
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Level Meter | Check your recording level in dB |
Recording Time | The recording time of your current audio clip is displayed here |
Remaining Recording Time | Shows the remaining recording time of the microSD card |
File Name | Next to recording time, you can find the file name of your upcoming wave file |
Waveform Display | Monitor the recording as a waveform visualization. It will be orange coloured during an audio recording |
Recording Gain | Adjust your recording gain here. This is important if you choose 48kHz / 24-bit recording format |
Record Button | Start and stop the recording here |
Low Cut Filter | If this filter is ON, it will reduce noise for all frequencies lower than 80Hz. This can be useful if working with sounds with too much bass and low frequencies like background noise |
Mic Plugin Power | The mic plug-in power is set to ON in the standard settings and has 5V. With this plug-in power, you can use all electret lavalier microphones. You can turn it OFF if you are working with dynamic microphones. |
Please note:
Usually the enabled plug-in power doesn't affect most dynamic microphones. However, this does not apply to every model. So please check with the microphone’s manufacturer. Plug-in power turned OFF extends battery life.
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Playback
In this section of the menu, you can listen to your recorded files. Connect your headphones to the 3.5mm headphone out of the TRACK E or use the audio monitoring feature via smartphone (see "Audio monitoring"). Make sure to set your headphone volume accordingly.
Playback | In playback mode, the status LED will be green |
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Here you can skip between the recorded files |
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Each time you tap it will double the speed. It can play back your file with up to 64x the regular speed |
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Stop / Play |
File information | This gives you all the information about each recorded file |
Name | Shows the name and number of the file |
Channel Count | Mono |
Sample Rate | 48 kHz |
Recording Bit Depth | Shows the recording format 32-bit or 24-bit |
Length | Shows the length of each clip |
Timecode | Shows the timecode and frame rate |
SETTINGS
Device Name | Change the predefined device name by simply clicking on the name field, change the name and confirm with ‚return‘ |
Please note:
Creating a new device name will create a new folder on your microSD card named after this device.
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Recording Format | |
48 kHz / 32-bit Float | This format records 32-bit float WAV. files Adjusting the recording gain is not required. As long as maximum input levels are not exceeded, both quiet and loud sounds can be recorded with high quality. This 32-bit float recording will disable the limiter |
48 kHz / 24-bit | This format records standard 24-bit WAV. files. Adjust the recording gain, so that the clip indicators do not light up red while recording. In the 24-bit format, the limiter is always enabled |
Auto Power Off Time | Use auto power off to automatically power off your TRACK E after 2, 4, 8 or 12 hours. During recording and playback auto power off is disabled. Reading external timecode or formatting the SD card will reset the power off time |
Headphone Volume | Tap on the little speaker icon and adjust the volume of the headphone output* |
*Please note:US version has the headphone output deactivated during recording
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LED Brightness | Adjust the brightness of the LEDs here |
LED while Recording | Here you can deactivate the level LED completely during recording |
User Switch Assignment | Click on the field and select an action for your user switch on the TRACK E when pulling it up |
Not used | No action will happen, if user switch is pulled up |
Start / Stop Playback | You can now listen to your last recorded file when the user switch is pulled up |
Start / Stop Recording | This action is preset and allows you to manually start / stop an audio recording via user switch |
Start / Stop Test Tone | This will output an test tone (1kHz at -18dB) through the headphone output. |
Format SD Card | To format your SD card, just press the button and confirm it in the pop-up window |
General information | |
Firmware Version | Shows the current firmware version running on the device |
Hardware Revision | Shows the hardware version of this unit |
Hardware Serial No. | Shows the serial number of your TRACK E |
App Version | Shows the current software version of your setup app |
Real Time Clock (RTC) | Shows the current time and date of the internal real time clock |
Limiter | The limiter icon is only visible in your monitoring view. If you select 48 kHz / 24-bit recording format, the limiter is enabled. In 32-bit float it will be disabled. The limiter will compress the dynamic range, so that sudden volume peaks can be prevented. |
USER SWITCH ON/OFF
The TRACK E has a multipurpose user switch on the right side.
Power On | Pull down the user switch until the level LED will start a blue animation |
Power Off | Pull down the user switch for more than 5 seconds. The status LED will flash white until the TRACK E is turned off |
Start Recording | Pull up the user switch. The status LED will light up red during recording |
Stop Recording | Pull up the user switch again. The status LED will go back to white |
The Start / Stop Recording action for the user switch is predefined, but can be assigned differently in the settings section of the menu (see user switch assignment)
TRACK E MICROPHONE
The TRACK E set includes a versatile lavalier microphone (omnidirectional characteristic) with windjammer and clip. Of course, Tentacle TRACK E is compatible with all common lavalier, electret shotgun and dynamic microphones. An adapter to 3.5 mm mini jack with a standard Sennheiser wiring may be necessary.
MICROPHONE INPUT
The TRACK E has a 3.5mm mini jack microphone input with screw lock. 5V plug-in power is activated, for dynamic microphones the plug-in power can be deactivated in the Tentacle Setup App. This input can also be used to jam-sync your TRACK E from any external timecode source via cable (see timecode jam sync)
MICROPHONE ADAPTERS
To connect an even wider range of lavalier microphones to TRACK E, you may need an adapter, you may need an adapter with a standard Sennheiser wiring. The adapters and a variety of accessories are available at your local dealer at shop.tentaclesync.com
HEADPHONE OUTPUT
To monitor while recording* please connect headphones with a 3.5mm mini jack connector to the headphone out of the TRACK E device. For a playback of your already recorded files, you also need to open the Setup App playback section in the device’s menu. You can adjust the headphone level for each device in the app.
MICRO SD CARD
The included 16GB microSD card is located on the left side of the TRACK E. Just pull out the cover and push the card in to remove it. This card can record up to 30 hours in 24-bit recording format and 23 hours in 32-bit Float recording format. Formatting the microSD card is easily done in the Setup App via Bluetooth. You’ll find it in the settings section of the menu.
RECHARGEABLE BATTERY
The TRACK E has a built-in, rechargeable and replaceable Lithium-Polymer battery. Charging is possible via USB-C. The charging status will be shown by the charging LED right next to the USB-C port. The internal battery can be charged from any USB power source.
The charging time is max. 2 hours if the battery is completely empty. Fully charged, TRACK Es can run for up to 10 hours. When the battery is at less than 10%, Tentacle indicates this by flashing the level LED yellow several times. The device continues to run in this state, until it switches itself off at 3% of battery status. If the battery is completely empty, the TRACK E can no longer be switched on before it has been recharged.
The battery is easily replaceable, once the performance is decreasing after 2-4 years depending on the use. A battery replacement kit can be obtained from Tentacle Sync.
In this case please contact support@tentaclesync.com
USB-C PORT AND CARD READER
The USB-C port at the bottom of the TRACK E can be used for charging and as a card reader as well.
As a card reader the USB-C port is used for fast data transmission. This way, there is no need to remove the microSD card from the TRACK E. You can transmit your files directly from the Tentacle TRACK E to your computer.
- Connect your switched off TRACK E to your computer via the included USB-C cable. You have to push the cable all the way into the TRACK E until it makes a ‚click‘ sound and the status LED indicates the connection by a short flash.
- A hard drive icon will appear on your desktop. You can drag and drop your files directly from the TRACK E onto your computer.
- To remove the TRACK E, please eject it correctly from your computer.
FIRMWARE UPDATE
You will find the newest firmware version for your TRACK E here:
Tentacle DownloadsBefore you start:
- Before performing the update, please back up your microSD card in case it contains important files.
- Make sure your TRACK E has sufficient battery. If your updating computer is a laptop, make sure it has sufficient battery too or is connected to mains
- The Tentacle Sync Studio software (macOS) or the Tentacle Setup software (macOS/Windows) should not be running at the same time as the Firmware Update App. The Tentacle can only be detected by one Tentacle software at a time
Update procedure:
- Download the firmware updater app, install it and open it
- Connect your TRACK E via USB cable to the computer and switch it on
- Wait for the updater app to connect to your TRACK E
- If an update is needed, start the update by pressing the „Start Firmware Update“ button
- During the update process (few minutes) your TRACK E status and level LEDs will blink purple
- The Update App will tell you when your TRACK E was successfully updated
- To update more TRACK Es you have to close and start the app again
In the unusual case that the firmware update fails, your device needs to be restored. In this case please contact: support@tentaclesync.com
TECHNICAL SPECIFICATIONS
* US Version: Headphone output is deactivated during recording


WARRANTY AND SAFETY REGULATIONS
INTENDED USE
The device is designed to record audio signals via a suitable external microphone (lavalier microphone). It must not be connected to other devices. The device is not waterproof and should be protected against rain. For safety and certification reasons (CE) you are not permitted to convert and/or modify the device. The device can be damaged if you use it for purposes other than those mentioned above. Moreover, improper use can cause hazards, such as short circuits, fire, electric shock, etc. Read through the manual carefully and keep it for later reference. Give the device to other people only together with the manual.
SAFETY NOTICE
A guarantee that the device will function perfectly and operate safely can only be given if the generally standard safety precautions and device-specific safety notices on this sheet are observed. The device is intended for professional use. The rechargeable battery integrated in the device must never be charged in an ambient temperature below 0 °C and above 40 °C! Perfect functionality and safe operation can only be guaranteed for temperatures between -20 °C and +60 °C. The device is not a toy. Keep it away from children and animals. Protect the device from extreme temperatures, heavy jolts, moisture, combustible gases, vapors and solvents. The safety of the user can be compromised by the device if, for example, damage to it is visible, it doesn't work anymore as specified, it was stored for a longer period of time in unsuitable conditions, or it becomes unusually hot during operation. When in doubt, the device must principally be sent in to the manufacturer for repairs or maintenance.
DISPOSAL / WEEE NOTIFICATION
This product must not be disposed of together with your other household waste. It is your responsibility to dispose of this device at a special disposal station (recycling yard), at a technical retail center or at the manufacturer.
FCC DECLARATION
This device contains FCC ID: SH6MDBT50Q
This device has been tested and found to comply with part 15B of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Modification to this product will void the user’s authority to operate this equipment. This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions. (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation.
INDUSTRY CANADA DECLARATION
This device contains IC: 8017A-MDBT50Q
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
This digital device complies with the Canadian regulatory standard CAN ICES-003.
DECLARATION OF CONFORMITY
Tentacle Sync GmbH, Wilhelm-Mauser-Str. 55b, 50827 Cologne, Germany
declares herewith that the following product:
Tentacle TRACK E timecode audio recorder
complies with the provisions of the directives named as follows, including changes in them that apply at the time of the declaration.
This is evident from the CE mark on the product.
EN 55032:2012/AC:2013
EN 55024:2010
EN 300 328 V2.1.1 (2016-11)
Draft EN 301 489-1 V2.2.0 (2017-03)
Draft EN 301 489-17 V3.2.0 (2017-03)
EN 62479:2010
EN 62368-1:2014 + AC:2015

TECHNICAL SUPPORT AND INFORMATION
support@tentaclesync.com
tentaclesync.com/download
TENTACLE SYNC GmbH
Wilhelm-Mauser-Str. 55b, 59827 Cologne, Germany
Tel.: +49 221 677 832 032