Helix Amplify 206 DSP Very Compact 5/6-channel Amplifier With 8 Channel DSP & ACO Platform

Helix Amplify AC20630 DSP

Maximum flexibility and performance in a compact, bridgeable 6-channel amplifier

The AMPLIFY 206 DSP expands the 2-Series with a highly versatile 6-channel option that covers a wide range of applications in modern vehicles. Thanks to their fully bridgeable architecture, the amplifiers can be configured flexibly in 3-, 4-, 5- or 6-channel operation. Its high output power and compact Class-D design make it suitable for fully active 3-way front systems in 6-channel mode as well as classic 5-channel layouts, where channels 1–4 drive the front and rear speakers while the bridged channels 5/6 deliver up to 380 Watts RMS at 4 Ω to a dedicated subwoofer. Altogether, the 206 DSP provides ample performance reserves with 6 x 100 Watts RMS at 4 Ω, 6 x 190 Watts RMS at 2 Ω or 3 x 380 Watts RMS bridged at 4 Ω, making it ideal for everything from refined multi-way concepts to dynamic front/rear/subwoofer configurations.

With its integrated 8-channel signal processor, the 206 DSP offers a level of flexibility that is rarely found in its class. The AMPLIFY 206 DSP combines compact dimensions with impressive dynamics, clean headroom and excellent controllability – ideal for powerful front systems, complex OEM multi-channel architectures and setups where a single device is expected to handle as many tasks as possible.

AMPLIFY 206DSP – Full-fledged HELIX DSP power in a compact 6-channel amplifier

The AMPLIFY 206 DSP combines a powerful 6-channel Class D amplifier with a full-featured 8-channel HELIX DSP – bringing more than 15 years of HELIX DSP expertise into the compact AMPLIFY 2-Series. At its core sits a 64 Bit fixed-point audio DSP, complemented by high-quality AD/DA converters and the fast, stable ACO platform. Together, these elements form the same technological foundation used in our larger HELIX DSP systems: precise signal processing, high computing performance and a consistently reliable architecture. This gives the AMPLIFY 206 DSP a level of audio performance and functionality that is rarely achieved in this form factor – positioning it as a particularly powerful and highly efficient price-performance solution within the HELIX DSP amplifier lineup.

With DSP PC-Tool 6, the latest iteration of our in-house tuning software is fully supported. Its signal-path-oriented interface enables a clear and intuitive navigation across the entire setup. Precise EQ tools, flexible filter options and time-alignment functions enable focused, vehicle-specific sound tuning, while the integrated RTA supports accurate in-car acoustic analysis and helps refine detailed tuning decisions. Additional features such as Virtual Channel Processing and HELIX sound effects – including Augmented Bass Processing, RealCenter and more – help structure complex configurations clearly and offer creative options for further shaping the sound signature.

In total, the AMPLIFY 206 DSP delivers HELIX-grade sound quality, flexibility and technological depth in an exceptionally compact and efficient all-in-one package.

ACO – Advanced 32 Bit CoProcessor platform

Rapid processing power beyond the signal path – the high-performance 32 Bit ACO platform handles all control tasks and ensures ultra-fast data communication with the DSP PC-Tool software, including lightning-fast switching between up to ten sound setups.
But ACO offers even more: integrated features like Augmented Bass Processing, RealCenter, Dynamic Loudness Control (DLC), and Remote Tone Control (RTC), along with the new Advanced Input Signal Analyzer (AISA), provide unmatched tuning versatility and allow analysis and compensation of input signals from factory sound systems that already contain sound settings.

HELIX AMPLIFY – Power. Clarity. Purpose.

With the AMPLIFY series, HELIX redefines the idea of modern amplifier design – by reinterpreting classic concepts through the lens of today’s audio demands. Rather than designing one amplifier to do everything, the focus lies on specialized models, each tailored for a specific type of application. This clear philosophy ensures every variant delivers exactly what’s needed – and nothing you don’t.
The 2-Series marks the entry into the AMPLIFY platform – and forms its technical and tonal core. These compact Class D amplifiers combine powerful performance, a fully bridgeable multi-channel architecture, and excellent efficiency with seamless real-world integration. Brilliant and precise treble, a controlled mid-range as well as tight, powerful bass – the 2-Series brings out every nuance of natural, powerful sound, outperforming the expectations of its class in both sound quality and output. Whether as a DIRECT, X-OVER, or DSP variant: from flexible 6-channel setups for fullrange applications to dedicated mono powerhouses for subwoofers – the 2-Series offers tailored solutions for every configuration.

Sound and power – above the standard

The AMPLIFY 2-Series is more than just a range of application-specific solutions – it’s a clear commitment to a very specific mission: to outperform expectations in each of those applications – both in sound quality and power delivery. All amplifiers in the series offer brilliant sound performance, minimal distortion, and an outstanding signal-to-noise ratio – combined with fully bridgeable multi-channel outputs for maximum output and installation flexibility. The result: a lineup that doesn’t define itself by its class, but sets new benchmarks within it – making AMPLIFY the first choice for those seeking application-focused performance without compromise.

Form follows performance

The design of the HELIX AMPLIFY 2-Series blends modern functionality with a refined, technical aesthetic. Its compact dimensions allow for flexible installation, even in tight spaces. A removable top cover conceals all connections and controls, offering additional protection as well as a clean and streamlined appearance that highlights the amplifier’s high-quality character. Matte surfaces, sharp contours, and a minimalist design language create a sleek, exclusive look that integrates seamlessly into any modern vehicle interior.

Features

• Highly efficient amplifier with high output power of up to 240 Watts RMS @ 2 Ohms per channel for impressive dynamics and powerful sound
• Integrated 8-channel DSP with precise adjustment options such as equalizer, time alignment, and filters for optimal adaptation to the vehicle
• Modern 64 Bit fixed-point DSP architecture and high-quality AD/DA converters for clean signal processing and detailed reproduction
• Flexible routing of DSP channels for configuring 2- or 3-way front systems, rear speakers, or subwoofer setups
• Bridgeable amplifier channels for driving powerful woofer or subwoofer
• Smart 6-channel highlevel input with ADEP.3 for trouble-free integration into OEM sound systems
• VCP (Virtual Channel Processing) offers outstanding flexibility in configuring complex sound systems
• ACO – Advanced 32 Bit CoProcessor platform for system and DSP features like:
• AISA (Advanced Input Signal Analyzer) and InputEQ for easy analysis and correction of input signals
• DLC (Dynamic Loudness Control) and RTC (Remote Tone Control) for volume-dependent dynamic adjustment of
• highs and lows
• Proprietary TuneEQ function for automated adjustment of the input, virtual and output equalizers
• SFX Sound Effects – Augmented Bass Processing, RealCenter & Co.
• Compact, future-proof SCP (Smart Control Port) for connecting remote controls and accessories
• Optical digital input in SPDIF format and two processed line outputs with max. 8 Volts output voltage
• Very compact design for space-saving installation
• Start-stop capability down to 6V supply voltage for uninterrupted performance
• Auto Remote switch for amplifier activation without the need for an external remote signal
• Advanced Class D concept for high efficiency and low heat dissipation
• Maximum control with DSP PC-Tool 6 – professional software for precise amplifier configuration and accurate sound tuning in the vehicle

DSP Features

TuneEQ

TuneEQ is an extremely flexible and particularly easy-to-use function for automated frequency response correction. A single measurement per audio channel or channel pair with a suitable measurement microphone (e.g. our AMI Tuning Kit) is sufficient for TuneEQ to independently and precisely adjust the equalizers to the desired reference curve. TuneEQ uses the full function set of the parametric equalizer including center frequency, Q-factor and gain adjustment. And since the highly complex arithmetic operations required for this run in the background, you also save a lot of time when optimizing your sound with TuneEQ.

RealCenter

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 an unique center signal. In contrast to common procedures, in which only the channels are summed up, the intensity of the center 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 center channel will not reproduce a signal. In the case of common algorithms, the volume level of the center channel is only reduced by 6 dB (= half volume level). Audiotec Fischer’s “RealCenter” allows a unique, broadened sound staging for both driver and co-driver at the same time! Therefore, the disadvantages of a conventional center channel, such as an intrusive, small sound stage, are things of the past.

Augmented Bass Processing

Audiotec Fischer’s proprietary “Augmented Bass Processing”, consisting of the two revolutionary sound features “Dynamic Bass Enhancement” and “SubXpander”, has been especially 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.

Technical Data

• Power RMS ≤ 1% THD+N @ 14.4 V
  •  @ 4 Ohms 6 x 100 Watts
  • – @ 2 Ohms 6 x 190 Watts
  • – @ 1 Ohm –
  • – bridged @ 4 Ohms 3 x 380 Watts
  • – bridged @ 2 Ohms –
• Max. output power per channel*
  • Up to 240 Watts RMS @ 2 Ohms
  • Up to 480 Watts RMS @ 4 Ohms bridged
• Amplifier technology Class D
• Inputs
  • 6 x RCA / Cinch
  • or
  • 6 x Highlevel speaker input
  • 1 x Optical SPDIF (12 – 96 kHz)
  • 2 x Remote In
• Input sensitivity
  • RCA / Cinch:1 – 8 Volts
  • Highlevel: 2 – 16 Volts
• Input impedance
  • RCA / Cinch 4,8 kOhms
  • Highlevel 9 – 33 Ohms or 20 kOhms with ADEP.3
• Outputs
  • 6 x Speaker output
  • 2 x RCA / Cinch
  • 1 x Remote Out
• Output voltage RCA / Cinch 8 Volts
• Frequency response 20 Hz – 22,000 Hz
• DSP resolution 64 Bit
• DSP power 1 x 295 MHz (1.2 billion MAC operations/second)
• Sampling rate 48 kHz
• DSP type 1 x Audio signal processor
• Signal converters
  • A/D: BurrBrown 24 Bit
  • D/A: AKM 24 Bit
• Signal-to-noise ratio (A-weighted)
  • Analog input: 99 dB @ full power
  • Digital input: 102 dB @ full power
• Distortion (THD @ 1 kHz, 1 W into 4 Ohms) < 0.005 %
• Distortion (THD+N @ 1 kHz, 1 W into 4 Ohms) < 0.02 %
• Distortion (THD @ 100 Hz, 1 W into 4 Ohms) –
• Distortion (THD+N @ 100 Hz, 1 W into 4 Ohms) –
• Damping factor 70
• Operating voltage 10.5 – 16 Volts (max. 5 sec. down to 6 Volts)
• Power rating DC 12 V ⎓ 93 A max.
• Idle current 1,100 mA
• Max. remote output current 500 mA
• Operating temperature range -40 °C to +70 °C
• Fuse 3 x 25 A LP-Mini-fuse (APS)
• Additional features ADEP.3 circuit, Smart Control Port, Auto Remote switch, 32 Bit CoProcessor
• Dimensions (H x W x D) 40 x 263 x 114 mm / 1.58 x 10.35 x 4.49”

What’s Included

• 1 x Amplifier HELIX AMPLIFY 206 DSP
• 2 x Allen key
• 1 x Mounting material
• 5 x Connection cable
• 1 x USB cable
• 3 x Fuse
• 1 x Instruction manual