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D Chadha Consulting Ltd

Hospitality Technology Solutions in a Changing World

Hospitality Technology Solutions in a Changing WorldHospitality Technology Solutions in a Changing WorldHospitality Technology Solutions in a Changing World

Bluetooth Amplifier & Receiver

The Dampf Bluetooth Hub

It is an audio amplifier featuring a Bluetooth Industrial-grade engine with an internal ceramic antenna, pre-amplifier, 40W power amplifier (20W RMS per channel) and a micro-controller.

Stable Bluetooth Connectivity

Dampf allows for easy configuration of name and pin-code (pairing protection), volume limitation per channel, and setting the number of Bluetooth users it remembers.

AUX-in Connection

An additional device like TV, soundbar or tablet can be connected through AUX-in (3.4mm audio jack). A multiplexer switches automatically between Bluetooth and Aux audio. 1-6 speakers can be connected in mono or stereo.

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1.  Connect an external audio device or TV to Dampf via the AUX-in. It automatically switches between Bluetooth and AUX-in, always giving priority to Bluetooth. Dampf AUX-out unit can be used as a pre-amplifier allowing easy pairing via Bluetooth, volume control and name + PIN configuration.


2.  Control the maximum volume here. Each channel has its own trimmer. By selecting a maximum limit, you can determine the ideal sound level.


3.  Add your Dampf speakers. A wide range of ceiling/in-wall and external speakers can be connected to the Dampf unit. It is advisable to use no more than up to 6 speakers per Dampf unit.


4.  Power input. This is all Dampf needs to play your music.


5.  Give your speaker a unique name and PIN code by using this RJ45 plug using Dampf’s custom software and renaming-kit. It is just a matter of seconds.


6.  The LED indicators show Dampf’s status.


7.  Screw holes for attaching the Dampf unit to a surface.

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Main Components

How it works

The four main blocks of the unit work together as follows:


  • The Bluetooth module, which is connected to a ceramic antenna, independently looks for Bluetooth devices (i.e. smartphones) and "pairs" with a device (only one at a time) if it fulfils the requirements. 
  • The resulting audio signal is sent to a pre-amplifier which boosts it and sends it to the power amplifier. 
  • The power amplifier signal is then sent to the external speakers.
  • The controller checks the status of the other modules and will channel the flow as required. Another important element of the in-unit design is the safeguarding of the power quality (not shown in photo) that minimises noise in all modules and allows use of (external) switched power supplies.

Technical specifications

  • Dimensions: 16.2cm x 6.9cm x 2.2cm (LxWxH)
  • Weight: 140 grams
  • Power supply input: 110-240 VAC, output 12V DC 
  • 2 x 20W RMS output
  • Bluetooth range is about 15m (using the internal ceramic antenna)
  • CE certified

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Main specifications

  • Dimensions: 16.2cm x 6.9cm x 2.2cm (LxWxH)
  • Weight: 140 grams
  • Power supply input: 110-240 VAC, output 12V DC
  • Easy to program individual name and PIN code for optimised control 
  • AUX-in for connecting external device (Dampf switches automatically between aux-in and Bluetooth)
  • Internal micro-controller for 24/7 reliability
  • Bluetooth range is about 15m (using the internal ceramic antenna)
  • No Switches - all control via guest's device (automatically goes into standby mode)
  • Heat and dust resistant
  • Works with many different speakers
  • Volume limitation per channel
  • Easily switchable between MONO and STEREO
  • Plastic casing in order to meet NEN1010 standards (non-metal required)
  • Extremely power efficient (0.8W in listening mode)
  • Only high quality components from top renowned manufacturers are used 
  • Can be used as a Bluetooth pre-amplifier (AUX-out)

The system is designed and produced in The Netherlands.

Please note that Dampf units are not connected to the network and/or WiFi. Units cannot be accessed remotely. As such, hacking of Dampf units is NOT possible. As hacking risks are clearly on the increase, this protects hotels and guests from a potential threat. 

Guest privacy

Details are secured and kept private. No records are being made and no data is collected in any form.

Product Specifications

SPECS - Dampf Bluetooth Audio (pdf)Download
DAMPF BLUETOOTH HUB MANUAL 2019 (pdf)Download

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Copyright © 2020 D Chadha Consulting Ltd. - All Rights Reserved. 

International House 12, Constance Street, London E16 2DQ United Kingdom 

Phone: +44-203-3755533 | Mobile no. +44-7920-533209

Email: info@dchadha.com

UK Company No. 12358738 

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