Frete grátis +30€ (Península Iberica)

Selecione lingua



Thank you for trusting our company and buying the new Speaker FS2. We hope you enjoy it. Before you start using the device, we strongly recommend reading this manual to get used to it.

Care and maintenance

  • Do not expose your Speaker FS2 to impacts, dust, humidity or high temperatures.
  • Use neither corrosive nor abrasive cleaning products.
  • Do not disassemble the device. All repair works should be carried out exclusively by qualified staff of Energy Sistem Technology, S.A.

Technical specifications


  • System: 2.0
  • Power: 12 W
  • 2 full range speakers: 1.5?, 6 W.
  • Passive radiator: 1 diaphragm at the base.
  • Frequency response: 80 Hz - 18 kHz
  • Signal/Noise ratio: > 60 dB

Wireless connectivity

  • Bluetooth 5.0, class II. Up to 20 m distance range.
  • Compatible Bluetooth profiles: HSP / HFP / A2DP / AVRCP
  • Frequency band: 2.4 GHz (2.402 ~ 2.480 GHz)
  • Maximum output power: < 20 dBm
  • Hands-free function. Microphone sensitivity: -42 dB
  • True Wireless Stereo (TWS) technology

TWS technology compatible with

  • Speaker FS2

Audio input

  • 3.5 mm mini jack stereo audio-in (AUX)

Audio output

  • 3.5 mm mini jack stereo audio output for headphones

SD and USB playback

  • SD and USB decoder: reads MP3 and WAV files stored on external units (up to 128 GB) with FAT/ FAT32 file system.


  • Capacity: 2000 mAh
  • Type: lithium polymer
  • Battery life: up to 12 hours*
  • Charging port: USB Type-C
  • Charging time: 2.5 hours

Product content

  • Speaker FS2
  • USB Type-C cable to charge the battery
  • Quick guide

General overview

1. On/Off
2. Playback mode
3. Play/Pause
4. Volume +
5. Volume -
6. Next
7. Back
8. Display
9. USB Type-C charging port
10. USB playback port
11. SD card slot
12. 3.5 mm audio-in (AUX)
13. 3.5 mm audio output for headphones

Main Functions

Switching on and off the device

To switch on your Speaker FS2, press and hold On/Off (1) on the top panel for 3 seconds. At this point, the Display (8) lights up showing the selected playback mode.

Press and hold On/Off (1) on the top panel for 3 seconds to switch off the device. The Display (8) will switch off.

Note 1: When switching on the device, it will always enable the last playback mode selected.

Playback modes

Once the Speaker FS2 is on, you can choose the playback mode you prefer. To do so, press Playback mode (2) repeatedly until finding the preferred playback mode. Playback modes will appear in the following order:

Bluetooth --> SD --> USB --> AUX

If you plug a removable storage unit (USB stick or SD card) or use the AUX input, your Speaker FS2 will enable the corresponding playback mode and will play the content automatically.

Playback control

Select a playback mode and you will be able to control all playback functions from your Speaker FS2.

Press Play/Pause (3) to play or pause a song.

Press Volume - (5) or Volume + (4) to adjust the volume level according to your preferences.

Press Back (7) or Next (6) to skip to the previous or next song.

Important: If you are using the AUX input, you will have to control playback from the connected music player.

Bluetooth (BT)

To pair your speaker with a Bluetooth device, press Playback mode (2) until Bluetooth mode is enabled. The Bluetooth symbol (bt) will flash on the Display (8).

At this point, access the Bluetooth settings on the device and search for Energy Sistem Speaker FS2 among the detected devices. Select it to establish the connection. The devices will be connected immediately. You will hear a sound confirming both devices are correctly paired. At this point, the Bluetooth symbol (bt) is displayed permanently on the display.

Your Speaker FS2 will automatically pair with your source device when you turn the speaker on again, provided that Bluetooth is enabled on the source device.

Press and hold Playback mode (2) for 2 seconds to disconnect the current device and pair the Speaker FS2 with a new one. You will hear a sound when both devices disconnect and the Bluetooth symbol (bt) will flash on the Display (8).

True Wireless Stereo (TWS)

This technology allows you to wirelessly connect a second Speaker FS2 within a maximum distance range of 20 metres to increase power and create a stereo system with separate left and right channels.

To do so, pair one speaker with your smartphone via Bluetooth first. Once you've done this, switch on the second speaker and enable Bluetooth mode.

Press and hold Play/Pause (3) for 2 seconds on both speakers. You will see the Bt symbol flashing quickly on both units. A few seconds later you will hear a sound to confirm both speakers have been successfully synchronized.
You will hear the music through both speakers at the same time. One speaker will be assigned the left channel (L) and the other one the right channel (R).

The next time you turn on both speakers, they will pair with one another automatically.

To disable the True Wireless Stereo function, press and hold Play/Pause (3) for two seconds on any speaker. You will hear a confirmation sound when both units disconnect.

Skip to the next/previous track and adjust the volume from any speaker while TWS mode is enabled. If you turn up the volume on any of the speakers, you will be turning up the volume of both of them at the same time.

Important: This is only possible if Bluetooth mode is enabled. In all other playback modes (USB, SD or AUX-in) a TWS connection is not possible.

Removable USB sticks/SD cards

Play .mp3 and .wav files from your USB sticks or SD cards (up to 128 GB). Plug the USB stick into the USB playback port (10) or the SD card into the SD card slot (11). The speaker plays the contents automatically a few seconds after inserting the storage unit.

If you turn off your Speaker FS2 or select another playback mode, the internal memory will save the moment where you paused playback. This way, music playback will always resume from the last track you listened to.

Press Play/Pause (3) to play or pause a song.

Press Volume - (5) or Volume + (4) to adjust the volume level according to your preferences.

Press Back (7) or Next (6) to skip to the previous or next song.

To select the next folder, press and hold Playback mode (2).

To select the preferred playback mode, press and hold Play/Pause (3) for 2 seconds. The information below will appear on the Display (8):

1) ALL: all USB or card contents will be repeated. The folders and files stored on your removable storage units will be read in chronological order.

2) ONE: the song you are listening to will be repeated.

3) RAN: random playback of all the contents of your removable storage unit.

4) FOLD: the folder with the songs you are listening to will be repeated.

The root folders and files of your removable USB sticks and SD cards will be read in chronological order and the songs included in your folders in alphabetical order.

Here you have a diagram of the reading order:


Auxiliary audio input

Your Speaker FS2 features a 3.5 mm audio-in (AUX) (12) to plug your music player using a 3.5 mm jack cable.

When using the audio-in (AUX), your Speaker FS2 enters AUX mode automatically, thus showing it is ready to start playing content from an external device.

Important: If this mode is enabled, you will have to control playback from the connected music player.


The speaker features a digital equaliser with several preset modes. Press repeatedly Playback mode (2) to select the preferred EQ mode while the device is playing music. There are 5 EQ modes available:

EQ1: Flat or flat EQ.
EQ2: Bass, EQ for an extra bass boost.
EQ3: Treble, EQ for an extra treble boost.
EQ4: Mid high, EQ for a mid boost.
EQ5: Mid low, EQ for a mid cut.


Energy Sistem Technology, S.A. is liable for any lack of conformity for 36 months from the date the goods are purchased. Batteries are excluded from the 36-month warranty, having a warranty period of 24 months.

This warranty covers defects in workmanship or materials and does not cover product failures due to accidents, misuse or alteration made by an unauthorized person.

The extended 36-month warranty is valid for the European Union. For other countries please refer to your specific legislation or your local distributor.

Warranty procedure

Please visit and select your product to view the FAQ (Frequently Asked Questions), user manual, quick guide, drivers and updates available as well as to submit a query to our Technical Support or manage the warranty.

You may also contact the distributor that sold the product by presenting the purchase receipt or invoice.

Important: This warranty does not cover any damage or loss of data stored on warranty products. Therefore, Energy Sistem's Technical Support will not assume any loss of the above-mentioned information. In this respect we recommend making a backup of your data and removing any personal data from the product internal memory before you send it or send it only with the original data. Specifications are subject to change without notice.

Trademarks. All company, brand and product names are trademarks or registered trademarks of their respective companies. Specifications are subject to change without notice.

©2020 by Energy Sistem Technology, S.A. All rights reserved.

Declaration of conformity

Issuer's name: Energy Sistem Technology, S.A. - CIF: A53107488
Address: C/ Calpe, 1 - 03509 Finestrat, Alicante (Spain)
Tel: +34 966 830 324

We declare under our sole and exclusive responsibility that the product:

Description: home speaker
Brand: Energy Sistem
Model: Speaker FS2
Manufacturer: Energy Sistem Technology, S.A.
Manufacturing country: China

referred to in this declaration is in compliance with the following European Union directives:

EN 50663:2017; EN 62479:2010
EN 62368-1:2020+A11:2020
EN 301 489-17 V3.2.2 (2019-12)
EN 301 489-1 V2.2.3 (2019-11)
EN 300 328 V2.2.2 (2019-07)
EN 303 345-1 V1.1.1 (2019-06)
EN 303 345-3 V1.10 (2019-11)

in conformity with the provisions of the Directive 2014/53/EU of the European Parliament and of the Council of 16th April 2014.

Finestrat, 1st December 2020

Miguel Ángel Aragüez García
Innovation and Technology Director