HELIX 6-channel amplifier with integrated 8-channel DSP P SIX DSP ULTIMATE


Sale price£1,299.99



Enormous power and progressive DSP technology for the ultimate sound experience.

The P SIX DSP ULTIMATE 6-channel amplifier delivers enormous power and sophisticated DSP technology in perfect harmony. Up to 285 Watts RMS per channel into 2 Ohms and the integrated 12-channel signal processor with doubled processing power guarantee an incomparable sound experience in high-res quality. Our „ULTRA HD Class D“ philosophy focuses on combining the excellent sound characteristics of Class AB technology with the efficiency of a digital amplifier. In addition, the integration of numerous new functions and features, such as the ACO platform, the optical digital output and much more, make one thing clear: The P SIX DSP ULTIMATE is in a league of its own.

State-of-the-art Technology and TwinDSP power for the ultimate High-Res sound experience

The P SIX DSP ULTIMATE is equipped with two of the most powerful 64-Bit audio signal processors from Analog Devices. The incredible processing power of 2.4 billion MAC operations per second, combined with the high sampling rate of 96 kHz and the resulting audio bandwidth of over 40 kHz, as well as the BurrBrown A/D and D/A signal converters, ensure outstanding sound in High-Res quality. In addition, the complete audio signal path, including the new, more powerful power supply, has been optimized down to the last detail.

ACO – Advanced 32 Bit CoProcessor Platform

The P SIX DSP ULTIMATE is equipped with our proprietary 32 Bit ACO platform, which doesn’t just take over all control tasks ultra-fast, but also handles a bunch of audio functions: Now, fantastic sound effects such as Augmented Bass Processing or Real Center 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.

Optimal connectivity and flexibility

With its wide range of in- and outputs (6x high level, 6x RCA, 1x optical SPDIF, 1x coaxial SPDIF, 1x HEC slot, 4x line output & 1 x optical output), the P SIX DSP ULTIMATE offers everything for an easy adaption to existing factory radios or multi-channel OE sound systems. Additionally, the extended voltage range up to 32 V RMS allows the combination with almost any imaginable analog signal source, even with high-power OE amplifiers. Furthermore, the integration of the optical digital output enables a completely digital signal chain with downstream amplifiers, for example the P ONE MK2 or P TWO MK2. Last but not least, VCP (Virtual Channel Processing) is now included for the flexible and easy configuration of even highly complex sound systems.

DSP PC-Tool 5 feat. TuneEQ – Powerful features for ultimate sound experiences

Of course, the P SIX DSP ULTIMATE can be easily configured via our new, professional and exceptionally intuitive DSP PC-Tool 5. The well-known, numerous setting options with their extensive sound processing functions leave nothing to be desired and guarantee an extremely precise sound adjustment even under the most difficult conditions. And thanks to our new, easy-to-use TuneEQ function for automated frequency response correction, you also save a lot of time while optimizing your sound.


  • Up to 285 W RMS output power per channel into 2 Ω
  • Ultra HD Class D concept – combines the high-end sound quality of Class AB technology with the benefits of Class D amplifiers
  • TwinDSP Power – two extremely powerful “fixed point” Audio DSPs with 64 Bit resolution and 2.4 billion MAC operations per second
  • A/D and D/A signal converters from BurrBrown
  • VCP (Virtual Channel Processing) allows even more flexible configuration for highly complex sound systems
  • ACO – Advanced CoProcessor for extended feature set
    • ISA (Input Signal Analyzer) and InputEQ for easy analysis and compensation of input signals
    • Proprietary TuneEQ function for automated adjustment of the output equalizers
    • SFX (DSP Sound Effects) – Augmented Bass Processing, RealCenter & Co.
  • High power 6-channel highlevel input with up to 32 V RMS input sensitivity and ADEP.3 circuit
  • Optical (max. 96 kHz) and coaxial (max. 192 kHz) digital input in SPDIF format
  • Four RCA / Cinch outputs with max. 3 Volts output voltage
  • Optical digital output in SPDIF format (96 kHz)
  • Compact, future-proof Smart Control Port (SCP) for connecting remote controls and accessories
  • HEC slot for system expansions like Bluetooth® HD Audio Streaming, High Resolution Audio Streaming via USB etc.
  • Automatic Remote switch
  • Start-Stop capability down to 6V supply voltage
  • Very compact design with low heat dissipation thanks to extraordinary efficiency

Technical Data

  • Power RMS ≤ 1% THD+N     
  • - @ 4 Ohms: Channel A - F: 6 x 120 Watts
  • - @ 2 Ohms: Channel C - F: 4 x 230 Watts
  • - @ 1 Ohm: N/A
  • - bridged @ 4 Ohms: N/A
  • - bridged @ 2 Ohms: N/A
  • Max. output power per channel*: Channel A - F: up to 145 Watts RMS @ 4 Ohms, Channel C - F: up to 285 Watts RMS @ 2 Ohms
  • Amplifier technology: Ultra HD Class D
  • Inputs: 6 x RCA / Cinch, 6 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 - 4 Volts or 4 - 8 Volts, Highlevel 4 - 16 Volts or 8 - 32 Volts
  • Input impedance RCA / Cinch: 13 kOhms
  • Input impedance highlevel: 9 - 33 Ohms with ADEP.3
  • Outputs: 6 x Speaker output, 4 x RCA / Cinch, 1 x Optical SPDIF (96 kHz), 2 x Remote Out
  • Output voltage RCA / Cinch: 3 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: BurrBrown, D/A: BurrBrown
  • Signal-to-noise ratio digital input: 108 dB (A-weighted)
  • Signal-to-noise ration analog input: 102 dB (A-weighted)
  • Distortion (THD): < 0,004 %
  • Damping factor: > 100
  • Operating voltage: 10.5 - 32 Volts (max. 5 sec.down to 6 Volts)
  • Power rating: DC 12 / 24 V ⎓ 65 A max.
  • Idle current: 1350 mA
  • Max. remote output current: 500 mA
  • Fuse: 3 x 20 A LP-Mini-fuse (APS)
  • Additional features: 32 Bit CoProcessor, HEC slot, ADEP circuit, Auto Remote switch, Smart Control Port
  • Dimensions (H x W x D): 50 x 260 x 190 mm / 1.97 x 10.24 x 7.48“

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