• Extremely powerful Fixed Point Audio DSP with 64-bit resolution and 1.2 billion MAC operations per second
  • HELIX Extension Card Slot (HEC) for more I / O modules such as Bluetooth ® audio streaming, high-resolution audio streaming via USB etc.
  • Intelligent high-level input with ADEP (Advanced Diagnostics Error Protection) circuitry
  • Starting plugability down to 6V supply voltage
  • Freely definable signal routing with separate matrices for Line, SPDIF and HEC / AUX
  • Time correction with up to 20 ms delay time per channel, plus input time correction for time-correct summation of the inputs
  • Optimized signal routing and power supply for excellent sound quality
  • “Ground Lift” switch to avoid ground loops
  • Control input for connecting remote controls and other accessories
  • Inputs: 6 x Cinch, 6 x Highlevel and 1 x Optical SPDIF
  • Outputs: 8 x RCA with a maximum of 6 volts output voltage
  • Simple configuration thanks to the professional yet user-friendly DSP PC-Tool Software Version 4
SKU: HP58208 Category: Tag:


The new sound generation – HELIX DSP.2

The “technical heart” of the state-of-the-art HELIX DSP.2 is extremely elegant and compact, offering the latest 64-bit audio DSP with its enormous computing power of 295 MHz and 1.2 billion MAC operations Not only in this price range, unimagined sound optimization options per second.

The connection options leave nothing to be desired – six RCA and six high-level inputs with ADEP (Advanced Diagnostics Error Protection) circuitry, an optical SPDIF input and eight RCA preamp outputs with a maximum output voltage of 6 volts allow the most flexible plant concepts. But that’s not all – the HELIX Extension Card slot (HEC slot) makes it possible to extend the DSP.2 with additional interfaces such as a Bluetooth ® audio streaming module or a high resolution audio USB sound card.

And thanks to the completely redesigned DSP PC-Tool software V4, the configuration of the HELIX DSP.2 is easier and more versatile than ever despite the extended functionality.

DSP-Inside-64-BIT High Level Input RCA Input Optical input HEC-slot Remmote Control ready Car Remote Switch ADEP DSP PC tool-ready Start-stop capability PSM Regulated Power Supply SMD Made-in-Germany


Special features:

Intelligent high-level input
Modern, factory-installed car radios are becoming increasingly intelligent in terms of diagnosing the connected speakers. If a signal processor is connected to the radio instead, it usually results in error messages up to the elimination of individual functions (such as faders). The new Advanced Diagnostics Error Protection (ADEP) circuitry eliminates all of these problems without unduly stressing the radio’s speaker outputs at high levels.

Power save mode
The Power Save mode is activated in the basic settings of the DSP PC-Tool software. It allows to drastically reduce the power consumption of the amplifiers connected to the signal processor if there is no input signal for more than 60 seconds. It should be noted that today many vehicles are equipped with “CAN” or similar internal bus systems that leave the radio “invisible” to the user for up to 45 minutes, even if you have meanwhile left the vehicle and completed. As soon as the “Power Save Mode” is active, the remote output and thus the connected amplifiers are switched off. The HELIX DSP.2 reactivates the remote output within one second as soon as a music signal is present at one of its inputs. It is also possible

Start Plugability
The power supply in the HELIX DSP.2 ensures the internal power supply even with short-term drops down to 6 volts.
This ensures that the HELIX DSP.2 remains fully functional even when the engine is started.

Automatic Digital Signal Detection
Switching between the analog and the digital input is signal-controlled. As soon as an audio signal is detected at the optical input, the signal processor switches to this input. In the DSP PC-Tool software, this function can be deactivated or, alternatively, a manual control can be selected via an optionally available remote control.



Note: The Bluetooth ® word mark and logos are registered trademarks of Bluetooth SIG, Inc. and any use of such marks by Audiotec Fischer GmbH is under license. Other trademarks and trade names belong to their respective owners.



inputs 6 x Cinch 

6 x High-level speaker input 

1 x Optical SPDIF format (12 – 96 kHz) 

1 x Remote In

input sensitivity RCA 2 – 4 volts 

high 3.5 – 11 volts

outputs 8 x RCA 

1 x Remote Out

output voltage 6 volts

frequency range 10 Hz – 22,000 Hz

DSP resolution 64 bits

DSP computing power 295 MHz (1.2 billion MAC operations / second)

sampling rate 48 kHz

DSP type Audio signal processor

signal converter A / D: Burr Brown 

D / A: Burr Brown

Signal-to-noise ratio digital input 112 dB (A-weighted)

Signal-to-noise ratio analog input 107 dB (A-weighted)

Total harmonic distortion (THD + N) digital input <0.0008%

Harmonic distortion (THD + N) analog input <0.002%

Intermodulation distortion digital input <0.003%

Intermodulation distortion analog input <0.005%

crosstalk > 90 dB

operating voltage 9.6 – 18 volts (max 5 sec down to 6 volts)

current consumption <480mA

Max. Remote output current 500 mA

Additional features HEC slot, ground 

switch , control input, ADEP circuit, auto remote switch

Dimensions (H x W x D) 40 x 177 x 120 mm


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