Amplifier with DSP processor Helix P Six DSP Ultimate
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Helix P Six DSP Ultimate Amplifier with DSP Processor
State‑of‑the‑art technology and TwinDSP power for a perfect high‑resolution audio experience
The P Six DSP Ultimate is equipped with two of Analog Devices’ most powerful 64‑bit audio signal processors. An incredible computing power of 2.4 billion MAC operations per second combined with a high sampling rate of 96 kHz and a resulting audio bandwidth above 40 kHz, as well as BurrBrown A/D and D/A converters, ensure exceptional high‑resolution sound. In addition, the entire audio path has been optimized down to the last detail, including a new, more powerful power supply.
ACO – Advanced 32 Bit CoProcessor Platform
The P Six DSP Ultimate features a proprietary 32‑bit ACO platform that not only takes over control tasks ultra‑quickly but also handles many audio functions. Advanced audio features such as Augmented Bass Processing or Real Center are implemented, as well as channel‑separated Input EQ including the Input Signal Analyzer (ISA) for easy analysis and compensation of input signals from OE radios that already include sound settings from the factory.
Optimal connectivity and flexibility
With a wide range of inputs and outputs (6x high level, 6x RCA, 1x optical SPDIF, 1x coaxial SPDIF, 1x HEC slot, 4x line outputs and 1x optical output), the P Six DSP Ultimate provides everything needed for easy integration into existing factory radios or multi‑channel OE audio systems. In addition, an extended input voltage range up to 32 V RMS allows combination with almost any conceivable source of analog signal, even high‑power OE amplifiers. The integration of an optical digital output enables a fully digital signal chain with downstream amplifiers, such as the P ONE MK2 or P TWO MK2. Lastly, VCP (Virtual Channel Processing) is now included for flexible and easy configuration of highly complex audio systems.
DSP PC‑Tool 5 feat. TuneEQ – Powerful features for perfect sound
The P Six DSP Ultimate can, of course, be easily configured using the new professional and exceptionally intuitive DSP PC‑Tool 5. With extensive adjustment options and advanced signal processing, sound can be tuned with extreme precision – even in acoustically challenging environments. The new, easy‑to‑use TuneEQ feature for automatic frequency response correction also saves a lot of time when optimizing sound.
Main features
- Output power up to 285 W RMS per channel into 2 Ω.
- Ultra HD Class D concept – combines superior sound quality of Class AB with the advantages of Class D amplifiers.
- TwinDSP Power – two extremely powerful 64‑bit fixed‑point audio DSPs with 2.4 billion MAC operations per second.
- BurrBrown A/D and D/A signal converters.
- VCP (Virtual Channel Processing) allows even more flexible configuration for highly complex audio systems.
- ACO – Advanced CoProcessor for an extended feature set.
- ISA (Input Signal Analyzer) and InputEQ for easy analysis and compensation of input signals.
- Proprietary TuneEQ feature for automatic adjustment of output equalizers.
- SFX (DSP Sound Effects) – enhanced bass processing, RealCenter & Co.
- High‑performance 6‑channel high‑level input with input sensitivity up to 32 V RMS and ADEP.3 circuitry.
- Optical (max. 96 kHz) and coaxial (max. 192 kHz) digital SPDIF inputs.
- Four RCA/Cinch outputs with max. output voltage of 3 V.
- Optical digital output in SPDIF format (96 kHz).
- Compact, forward‑looking Smart Control Port (SCP) for connecting remote controls and accessories.
- HEC slot for system expansion such as Bluetooth HD Audio Streaming, high‑resolution audio streaming via USB, etc.
- Automatic remote turn‑on switch.
- Start‑Stop capability down to 6 V supply voltage.
- Very compact design with low heat dissipation thanks to exceptional efficiency.
Ultra HD Class D amplifier technology
Compared with conventional Class D amplifiers, this concept achieves an extended frequency response above 40 kHz combined with reduced distortion thanks to an advanced integrated feedback design. Ultra HD Class D delivers excellent sound quality comparable to Class AB while maintaining the efficiency of a Class D amplifier.ACO – advanced 32‑bit CoProcessor
The Helix P Six DSP Ultimate contains an exceptionally powerful next‑generation 32‑bit CoProcessor for all monitoring and communication tasks, both internal and external. Unlike previous 8‑bit generations, this MCU achieves much higher speeds for switching settings and data communication with our DSP PC‑Tool software. Another significant advantage is an integrated native bootloader for the CoProcessor. It enables software updates of all parts of the integrated DSP to adapt the ADEP.3 circuitry controlled by microcontrollers to future diagnostic requirements of factory radios or if the unit is expanded with additional interfaces. Additionally, thanks to new flash memory, ACO offers 10 standard memory presets instead of the usual two.
Intelligent high‑level input ADEP.3
Modern factory‑installed car radios include sophisticated capabilities for diagnosing connected speakers. The latest generation of radios is equipped with additional monitoring functions, so error messages and loss of certain functions (e.g. fader functions) often occur when an amplifier is connected – but not with the P Six DSP Ultimate. The new ADEP.3 (Advanced Diagnostics Error Protection, 3rd generation) circuitry avoids these issues without unnecessary loading of the radio’s speaker outputs at high volumes.
Start‑Stop capability
The switched power supply of the P Six DSP Ultimate ensures a stable internal supply voltage even if the battery voltage drops to 6 V during engine start.
Power saving mode
Power saving mode is part of the basic settings. It allows a significant reduction of power consumption for amplifiers connected to the HELIX P Six DSP Ultimate when no input signal is present for more than 60 seconds. Please note that in many modern cars with CAN or other internal bus structures the radio may remain “silently” active for up to 45 minutes after locking and leaving the vehicle. Once Power Saving Mode is active, the remote output and connected amplifiers will be switched off. If an audio signal is detected, the HELIX P Six DSP Ultimate will activate the remote output within one second. The shut‑off time can be changed to 60 seconds or Power Saving Mode can be completely disabled using the DSP PC‑Tool software.
About the brand
HELIX by Audiotec Fischer is a German brand of premium car audio equipment that has been among the world leaders in amplifiers and DSP processors for over 35 years. HELIX is regarded as a leader in digital signal processors, offering some of the most advanced and highest‑quality DSP processors in the world, enabling a skilled technician to tune any audio system to perfection and bring an authentic hi‑fi experience into the vehicle. The combination of precise German engineering, cutting‑edge technologies and innovative design produces a clean, dynamic and detailed sound appreciated by audiophiles worldwide. HELIX products are characterized by high efficiency, reliability and perfect integration into modern vehicles. They are an ideal choice for demanding users who require the best possible sound without compromise. Helix, together with Brax and Match, is part of the German manufacturer Audiotec Fischer.
| Catalog number | P816003 |
| Brand | Helix |
| Links | Official web presentation |
| Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier. | 6 |
| Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers. | Ultra HD Class D |
| RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | 6 x 120W |
| RMS power into 2 ΩRMS power when loading speakers or subwoofer at 2 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. | Channel CF: 4 x 230 W |
| Inputs | 6 x RCA, 6 x Hi-level, 1 x optical SPDIF, 1 x coaxial SPDIF |
| Outputs | 4 x RCA, 1 x optical, 6 x speaker |
| Integrated DSP processor | Yes |
| Number of DSP processor channels | 12 |
| Frequency rangeThe ability of the amplifier to reproduce the signal from the lowest frequency to the highest = faithfully reproduce the sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural. | 10 - 44000 Hz |
| Harmonic Distortion (THD)Total harmonic distortion indicates how much the input signal is distorted in the amplifier. Distortions appear as overtones contained in the output signal. The proportion of originally absent parts of the signal is given as a percentage, typical values are between 0.001% and 0.5%. Distortion is measured in their power band. If it exceeds the limit of 0.7% from a certain power, it is the value of the output power of the given amplifier, from which it no longer plays without distortion and from which the distortion usually increases steeply, so that no further increase in power can be counted on. The lower the value, the better. | < 0.004% |
| Signal-to-noise ratioThe signal-to-noise ratio means that the output signal always contains noise. The signal-to-noise ratio expresses how much of this noise is compared to the useful signal. The so-called A value is given, which does not take deep and very high frequencies into account. This corresponds to the characteristic of human hearing, which is not so sensitive to deep frequencies, especially below 1 kHz. The higher the value, the better the amplifier is. | 108 dB |
| Damping factorDF - Damping Factor . It is the ratio of the load (repro + cables, crossover, etc.) to the internal resistance of the amplifier. The bigger the DF, the more controlled the bass. Amplifiers with a lower DF tend to hum. Subwoofers with a higher Q in the bass reflex and sometimes in the enclosure will also cause humming. | > 100 |
| High level inputsThe high-level input on the amplifier allows connection directly to the existing speakers in the car without additional purchase of an external high/low adapter. Important equipment in the case of installing an amplifier on an original car radio. | Yes |
| Automatic on and offThis function allows you to automatically switch on the amplifier. | Yes |
| Socket input terminalsFerrule terminals allow better wiring contact to the amplifier. It is also a more secure form of terminals. If you are tightening the sleeve terminals, we recommend retightening them after 1 day, as the connected cable gradually compresses. | Yes |
| Remote control included in the packageSome models of amplifiers also come with wired remote controls in the package, which on one side plug into the amplifier and on the other side you have a potentiometer that you can place anywhere in the cabin. A common place to place the remote control is under the steering wheel. The advantage is the regulation of power, and therefore volume, depending on driving conditions and the mood of the crew in the car. | No |
| Input for wired remote controlIf the amplifier has a remote control input. | Yes |
| The value of the fuses on the amplifierFrom the value of the fuses on the amplifier, you can get a true picture of the real performance of the amplifier. | 3 x 20A |
| Dimensions of the amplifier | 50 x 260 x 190 mm |
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