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Regarding TV listening systems in its class, »sonumaxx-2.4« sets new quality markers.

Audiology tech, intelligent ergonomic design and the superior digital 2,4-GHz transmission technology make »sonumaxx-2.4« a convincing product - with powerful amplification, top-notch stereo sound, convenient handling and versatility.

Acoustic or inductive sound

»sonumaxx-2.4« is available with two different receiver types: a) with a stethoscope receiver and b) with the compact pocket receiver. The latter offers a wide range of choice regarding listening components, including inductive listening for users of hearing systems or CI-implants. 

With an adjustable volume of up to 120 dB, the »sonumaxx-2.4« offers balanced and clear sound even in the higher amplification range.

The 2.4 GHz digital transmission between transmitter and receiver is remarkably stable, secure and resistant to interference.

The »sonumaxx-2.4« transmitter

All the connection leads necessary for connecting the transmitter to an audio source - like a TV or any other sound system - are included, such as an optical TOSLINK cable.

The transmitter serves as storage and docking station, at the same time recharging the receiver's battery. A fully charged battery will last 6 to 8 hours, depending on the set volume. Two batteries are included, so these can be used and recharged alternatingly.

A button on the front of the »sonumaxx-2.4«-transmitter serves to select one of three sound profile presets, so the user can choose which one suits him best. 

The »sonumaxx-2.4«: Listen to your TV, disturb nobody and switch to conversation amplifier if needed.

The housing of the stethoscope receiver and the pocket receiver as well as their controls are identical.  an especially convenient feature is the possibility to switch the »sonumaxx 2.4« receiver from the TV sound to a conversation by the push of a button. An inbuilt microphone will then pick up the sounds of the environment and the »sonumaxx-2.4« amplifies and delivers them to your ears.

The stethoscope receiver

The receiver of the »sonumaxx-2.4« with its stethoscope design is comfortable to wear, without causing unpleasant pressure on the ears - thanks to the soft exchangeable silicone rubber earbuds and the very flexible speaker arms. 

The pocket receiver 

The pocket receiver offers maximum personalization. The 3.5 mm stereo jack port allows the connection of a wide variety of commonly available listening components, such as earphones, headphones or neckloops. 

Neckloop for inductive listening included: The contents of the pocket receiver set also feature a neckloop. Who ever prefers induction links (hooks) can order these from our product portfolio.


Transmission method: digital FM (Stereo)
Carrier frequency: 2,4 GHz
Frequency response: 30 - 20000 Hz
Harmonic distorsion: < 0,5 %
Signal-to-noise ratio: > 75 dB
Working range: 0° C – 55° C
Operating time per battery charge: approx. 6 - 8 hours
Battery type: Rechargeable Li-Polymer 3,7V 350 mAh
Included batteries: 2
Recharge time: approx. 5 h (2,5h for 90% recharge)
Maximum volume: ca. 120 dB (A)
Weight: 66 g
Power supply: 5 Volt DC
Power supply unit: 100-240 Volt 50-60 Hz
Weight: approx. 110 g
Transmission range: up to 25 m
Order information
»sonumaxx-2.4« set, transmitter with stethoscope receiver
»sonumaxx-2.4« PR set, transmitter with pocket receiver

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