Helix DSP MINI Digital Signal Processor + Wifi Module + URC Bundle

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HelixSKU: DSP MINI Bundle

Sale price£399.99 Regular price£430.00


Small in size, huge in sound!

High tech in compact dimensions despite its size, the HELIX DSP MINI is crammed with state-of-the-art technology. A 64 Bit Audio DSP of the latest generation in combination with a sampling rate of 96 kHz and a High-Resolution audio bandwidth up to more than 40 kHz provides phenomenal sound quality. In addition, the DSP MINI offers unique DSP sound features like the Augmented Bass Processing, the StageXpander or the RealCenter function which open new possibilities to tweak your audio system.

But not only in terms of sound quality, but the DSP MINI also heralds a new era in signal processor technology. An extraordinary powerful 32 Bit CoProcessor (ACO) for all monitoring tasks provides a decisive speed increase particularly in data communication with our DSP PC-Tool software, but also when switching between different sound setups. Furthermore, it supplies 10 internal memory locations for sound setups instead of the usual two.

As if that wasn't enough the high-level input with ADEP.3 circuit (Advanced Diagnostics Error Protection, 3rd Generation), the Auto Remote switch, an optical input as well as the HELIX Extension Card slot (HEC slot) for system add-ons like Bluetooth Audio Streaming or High-Resolution Audio Streaming via USB are, of course, part of the basic equipment.

The DSP MINI presents itself in the HELIX-typical, clean look - far too beautiful to hide it "somewhere" in the vehicle due to its small dimensions. Naturally, the HELIX DSP MINI can be configured as easy as usual thanks to the professional and particularly user-friendly DSP PC-Tool Software V4. Who said that size matters?

Extremely powerful fixed point Audio DSP with 64 Bit resolution and 1.2 billion MAC operations per second

High-Resolution audio bandwidth up to more than 40 kHz for unrivalled sound quality

ACO Advanced 32 Bit CoProcessor for all control and communication tasks

10 internal memory locations for sound setups

Setup switching within milliseconds

High-speed data transfer and improved usability

HELIX Extension Card slot (HEC) for system add-ons

Smart high-level input with ADEP.3 circuit and Auto Turn-On function

Start-Stop capability down to 6V supply voltage

Unique DSP Sound Effects such as the Augmented Bass Processing which dynamically optimizes the bass response of the subwoofer, the StageXpander that significantly widens the stereo perspective, the RealCenter function, which allows a perfectly focussed sound staging for both driver and co-driver and much more

Freely definable signal routing with separate matrices for line, SPDIF and HEC/AUX

Optimal signal path and power supply for further improved sound quality

Ground lift switch to avoid ground loops

Very compact dimensions for easy integration into the vehicle

Easiest configuration via the intuitive DSP PC-Tool V4 software 

Special features:

96 kHz sampling rate

The HELIX DSP MINI allows handling all signals with the doubled sampling rate of 96 kHz. Thus the audio bandwidth is no longer limited to usual values like 22 kHz but allows an extended frequency response to more than 40 kHz. Doubling the sampling rate requires significantly higher DSP power as the number of possible arithmetic operations is halved.

Only the implementation of the latest DSP chip generation allows raising the sampling rate to 96 kHz and adding new features at the same time.

Smart high-level input ADEP.3

Modern, factory-installed car radios incorporate sophisticated possibilities of diagnosing the connected speakers. In particular, the latest generation of car radios is equipped with additional monitoring functions so that failure messages and loss of specific features (e.g. fader function) quite often appear if a signal processor will be hooked up - but not with the DSP MINI.

The new ADEP.3 circuit (Advanced Diagnostics Error Protection, 3rd Generation) avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.

ACO - Advanced 32 Bit CoProcessor

The HELIX DSP MINI incorporates an extraordinary powerful 32Bit CoProcessor of the latest generation for all monitoring and communication tasks, both internally and externally. In opposite to the 8Bit predecessor generation, this MCU achieves way higher speeds with respect to setup switching and data communication with our DSP PC-Tool software. A further significant advantage is the integrated, native boot loader of the CoProcessor. It allows software upgrades of all components of the DSP in order to adjust the microcontroller-controlled ADEP.3 circuit for example at future modifications/changes in the diagnostic system of factory radios or if the device will be extended with additional interfaces. In addition, thanks to the new flash memory, the ACO offers 10 memory locations for sound setups instead of the common two.

Start-Stop capability

The switched power supply of the HELIX DSP MINI assures a constant internal supply voltage even if the batterys voltage drops to 6 Volts during engine crank.

Power Save Mode

The Power Save Mode is incorporated in the basic setup. It allows to significantly reduce the power consumption of the amplifiers that are connected to the HELIX DSP MINI once theres no input signal present for more than 60 seconds. Please note that in many up-to-date cars with CAN or any other internal bus structures it may happen that the radio remains invisibly turned on for up to 45 min. even after locking and leaving the car! Once the Power Save Mode is active the remote output and therefore the connected amplifiers will be turned off. The HELIX DSP MINI will reactivate the remote output within a second if a music signal is applied. It is possible to either modify the turn-off time of 60 sec. or completely deactivate the Power Save Mode via the DSP PC-Tool software.

Automatic Digital Signal Detection

Switching from analogue input to the digital input is done automatically as soon as a signal is detected on the Optical Input. This feature can be deactivated in the DSP PC-Tool software. Alternatively, you can use an optional remote control for manual switching between analogue and digital inputs.


The RealCenter feature is an algorithm, developed by Audiotec Fischer, that emphasizes the music information which is present in both the left and right front channel to create a unique centre signal. In contrast to common procedures, in which only the channels are summed up, the intensity of the centre signal is also dynamically controlled by the stereophonic informational content of the left and right channel.

Sounds complicated but this effect is astonishing: That means if solely the left or right channel delivers an audio signal, the centre channel will not reproduce a signal. In the case of common algorithms, the volume level of the centre channel is only reduced by 6 dB (= half volume level). Audiotec Fischers RealCenter allows a unique, broadened sound staging for both driver and co-driver at the same time! Therefore, the disadvantages of a conventional centre channel, such as an intrusive, small sound stage, are things of the past.

Augmented Bass Processing

Audiotec Fischers proprietary Augmented Bass Processing, consisting of the two revolutionary sound features Dynamic Bass Enhancement and SubXpander, has been specially developed to dramatically improve the bass reproduction of subwoofers.

The Dynamic Bass Enhancement ingeniously combines maximum deep bass and highest sound pressure - regardless of the music style or the tone controls in the head unit. Depending on the input signal, the Dynamic Bass Enhancement gains the lower frequency range and varies the cut-off frequency of the subsonic filter. The result is a significantly more powerful and deeper bass response at low and medium volume levels without the risk of overloading the subwoofer neither mechanically nor electrically at high volume levels. It is simply fascinating which bass performance is suddenly possible.

If you want an even lower and darker bass reproduction, the SubXpander can be additionally activated. Therefore, subharmonic tones are added to the fundamental tones in the frequency range between 50 and 100 Hz.


Depending on the speaker arrangement in the vehicle, a more or less wide stereo sound stage can be created on the front seats. A centre speaker may limit the spatial reproduction of the music additionally. This is where Audiotec Fischers new StageXpander comes into play a sound feature which seems to break the acoustic limitations and thus allows to create a way broader stereo base without negatively affecting the precision of the localization of voices or instruments!

The effect can be adjusted according to your personal preferences in four steps.


You are looking for more transparency and substance in the treble reproduction? With the ClarityXpander Audiotec Fischer is now offering the right tool. Properly adjusted (and therefore selectable in three steps) the feature adds additional harmonics in the upper-frequency range this is especially useful if the original speakers lack some brilliance in the treble response. The extra treble-kick is not only available for the two front channels but also separately adjustable for the centre channel. Even better - the centre channel allows activating an automatic and dynamic control so that music with loads of treble doesnt fatigue your hearing.

Wireless DSP configuration

Bye-bye USB cable! The WIFI CONTROL allows the comfortable configuration of Audiotec Fischer DSP products via wireless communication between PC and DSP device.

Remote control through app management

All DSP products with the ACO platform offer additional features such as volume control of all sources, subwoofer volume control, source selection, tone control and switching between sound setups via Android, iOS or the web app.

The web app is compatible with different operating systems like Apple iOS, Android, Microsoft Windows, Linux, etc.

URC 3 compatibility

Furthermore, a URC.3 remote control can be connected to the mini-DIN port and used in addition to the remote control via an app. Thus, the most important functions can be easily controlled while driving without having to hold the smartphone in your hand.

Establishes a wireless communication between your PC and DSP device via WiFi

DSP remote control of additional features such as volume control of all sources, volume control of the subwoofer, source selection, tone control and switching between sound setups via Android, iOS and Web-App for all DSP devices with Advanced CoProcessor (ACO)

Web-App compatible with several operating systems e.g. Apple iOS, Android, Microsoft Windows, Linux etc.

Two operation modes:

AP-Mode: WIFI CONTROL opens up its own WiFi network allows you to access the DSP anywhere and anytime

Client-Mode: WIFI CONTROL connects to an existing WiFi network allows you to connect the configured WIFI CONTROL to any DSP within the range of your existing WiFi

Compatible with remote control URC.3 

The universal cable remote control URC.3 allows controlling different functions such as subwoofer volume or HEC / MEC / AUX volume of BRAX, HELIX and MATCH DSP products. It consists of two rotary knobs and a switch, all of which can be easily defined from our DSP PC-Tool suite. The specific configuration options for each product can be found in the "Device configuration menu (DCM) software package.

CONTROL I and CONTROL II (CTRL): Various functions can be selected in the DSP PC-Tool Software, e.g. controlling the master volume, controlling the subwoofer volume, controlling the HEC / MEC / AUX volume etc.

MODE: Various functions can be selected in the DSP PC-Tool Software, e.g. activating the digital input, activating the HEC / MEC / AUX input, switching between two DSP-setups, deactivating all sound optimizing features of the DSP for demonstration purposes etc.

STATUS LED: The LED shows the status of the MODE switch

17 / 5.2 m connection cable

Mounting material included

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