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The name says it all – the new HELIX DSP ULTRA is anything but another signal processor with just more channels. Rather, it is the next technological milestone that impressively demonstrates Audiotec Fischer′s expertise in the field of DSP technology. Computing power can only be replaced by even more computing power – and that′s why the DSP ULTRA is equipped with two of the most powerful 64 Bit audio signal processors from Analog Devices. Incredible 2.4 billion MAC operations per second make the twelve separately processed channels and the multitude of new sound features in combination with the high sampling rate of 96 kHz (resulting in an audio bandwidth of over 40 kHz) possible. Rapid processing power not only in the signal path – the particularly fast 32 Bit ACO platform takes over all control tasks and ensures the decisive speed increase, especially for data communication with our DSP PC-Tool software, but also for the lightning-fast switching between up to ten possible sound setups. But ACO offers much more – fantastic sound effects such as Augmented Bass Processing or StageXpander are implemented as well as a channel-separated Input EQ including Input Signal Analyzer (ISA) for easy analysis and compensation of input signals of OE radios, which already include a sound setup ex works. The simple adaptation to existing factory radios or multi-channel OE sound systems is more important than ever before – and that′s why the DSP ULTRA is not only equipped with the latest generation ADEP.3 circuit, but also offers a particularly large adjustment range for the input sensitivity. The enormous range of 1 - 8 Volts (RCA) or 4 - 32 Volts (highlevel) allows the combination with almost any imaginable analog signal source, even with high-power OE amplifiers.


  • Inputs 8 x RCA / Cinch
  • 8 x Highlevel speaker input
  • 1 x Optical SPDIF (12 - 96 kHz)
  • 1 x Coax SPDIF (12 - 192 kHz)
  • 1 x Remote In
  • Input sensitivity RCA / Cinch 1 - 8 Volts
  • Highlevel 4 - 32 Volts
  • Outputs 12 x RCA / Cinch
  • 1 x Remote Out
  • Output voltage 8 Volts
  • Frequency response 10 Hz - 44,000 Hz
  • DSP resolution 64 Bit
  • DSP power 2 x 295 MHz (2.4 billion MAC operations/second)
  • Sampling rate 96 kHz
  • DSP type 2 x Audio signal processor
  • Signal converters A/D: Asahi Kasei 32 Bit
  • D/A: Asahi Kasei 32 Bit
  • Signal-to-noise ratio digital input 117 dB (A-weighted)
  • Signal-to-noise ratio analog input 111 dB (A-weighted)
  • Total harmonic distortion (THD+N) digital input 0.0004 %
  • Total harmonic distortion (THD+N) analog input 0.001 %
  • IM distortion (IMD) digital input 0.002 %
  • IM distortion (IMD) analog input 0.004 %
  • Crosstalk 90 dB
  • Operating voltage 9.6 - 18 Volts (max. 5 sec. down to 6 Volts)
  • Current draw 650 mA
  • Max. remote output current 500 mA
  • Additional features HEC slot, Ground lift switch, Control Input, 32 Bit CoProcessor, ADEP.3 circuit, Auto Remote switch
  • Dimensions (H x W x D) 40 x 177 x 170 mm