Product overview
The multi-tool in its ultimate form
The V EIGHT DSP ULTIMATE represents the next evolutionary leap of HELIX’s renowned all-in-one solution. Every aspect of this 8-channel amplifier with integrated 14-channel DSP has been reimagined, refined, and elevated – from signal processing and connectivity to outstanding performance and sound quality. This isn’t just an upgrade – it’s the embodiment of ambition and a commitment to redefining what multi-channel DSP amplifiers can achieve.
Cutting-edge amplifier technology meets next-gen performance
At the heart of the V EIGHT DSP ULTIMATE is a new generation of highly efficient TI Class D technology, delivering an enormous performance boost of up to 66 % over its predecessor – coupled with further refined sound quality and maximum speaker control. With 8 x 110 Watts RMS into 4 Ohms or 4 x 110 Watts RMS into 4 Ohms + 4 x 220 Watts RMS into 2 Ohms, the V EIGHT DSP ULTIMATE delivers impressive power reserves for the most demanding speaker systems.
Cutting-edge amplifier technology meets next-gen performance
Thanks to its significantly increased system performance, the V EIGHT DSP ULTIMATE handles complex high-performance audio systems with ease – precisely, powerfully and dynamically.
Unmatched connectivity for modern multi-channel setups
With an unprecedented range of input and output options, the V EIGHT DSP ULTIMATE is ready for any integration scenario – whether OEM systems, aftermarket head units, or direct connections to smartphones and tablets. It offers 12 highlevel inputs, 6 RCA / Cinch inputs, an digital optical input, the new Extension Card 2.0 slot, and the cutting-edge USB PerfectStream interface. On the output side, in addition to eight speaker outputs, the amplifier features six RCA / Cinch outputs for seamless expansion with additional amplifiers – making it the perfect centerpiece for any system architecture.
Perfect sound tuning thanks to optimization for the new DSP PC-Tool 6
The HELIX V EIGHT DSP ULTIMATE has been consistently designed to meet the requirements of sophisticated multi-channel systems – and with its integrated 14-channel signal processor, it offers a significant expansion of options compared to its predecessor. With its large number of processed DSP channels, which now include six line outputs instead of two, it offers maximum flexibility when implementing complex system configurations. In combination with the new DSP PC-Tool 6 software, users benefit from an enhanced feature set, smarter tuning tools, and a significantly improved user interface – enabling quick and precise sound tuning tailored to any acoustic environment or listening preference. The result: sound performance at the highest level.
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.
Control and high-end audio in perfect combination thanks to USB PerfectStream
With the upgraded ACO platform, the HELIX V EIGHT DSP ULTIMATE introduces USB PerfectStream – an interface that sets new standards in terms of connectivity and user-friendliness. This extends the amplifier with a bi-directional USB audio interface that simultaneously enables lossless audio streaming from smartphones, tablets, or PCs, real-time measurement signal transmission for AISA, and DSP PC-Tool configuration. Acting as an intelligent USB hub, the ACO platform eliminates the need for external measurement interfaces – making signal analysis and system tuning faster, easier, and more accurate than ever. A true advantage for professional system integrators.
Extension Card 2.0 – future-ready expansion
The V EIGHT DSP ULTIMATE is the first HELIX amplifier to feature the new Extension Card 2.0 slot – a revised expansion platform with screw-secured plastic cover and cross-series compatibility. Whether Bluetooth ® HD streaming or additional analog inputs, this modular approach allows the amplifier to be tailored to individual system requirements. The Extension Card 2.0 slot ensures maximum future compatibility for adding new signal sources.
Key features
- 14 DSP channels for maximum flexibility with multi-channel sound upgrades
- 8-channel amplifier with latest Class HD concept, which combines excellent sound quality with outstanding efficiency
- High power 12-channel highlevel input with up to 32 V RMS input sensitivity and ADEP.3 circuit for seamless OEM integration
- 1:1 IOR (Input-to-Output Routing) – all highlevel inputs can be individually assigned to an amplifier or line output, allowing signal routing directly from input to output
- Up to 270 W RMS output power per channel into 2 Ω
- USB PerfectStream technology – lossless high-resolution audio streaming (up to 192 kHz / 32 Bit), AISA measurement (Advanced Input Signal Analyzer), and simultaneous DSP configuration via USB-C
- Extremely powerful “fixed point” Audio DSP with 64 Bit resolution
- VCP (Virtual Channel Processing) offers outstanding flexibility in configuring complex sound systems, thanks to:
- Cross-channel group equalizers that affect several output channels simultaneously
- Multi-way speaker configuration of DSP sound effects (SFX)
- Additional features such as Rear Attenuation
- 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
Technical specifications
| Technical data | |
|---|---|
| – @ 4 Ohms | Channel 1 – 8: 8 x 110 Watts |
| – @ 2 Ohms | Channel 5 – 8: 4 x 220 Watts |
| – @ 1 Ohm | – |
| – bridged @ 4 Ohms | – |
| – bridged @ 2 Ohms | – |
| Max. output power per channel* | Channel 1 – 8: up to 140 Watts RMS @ 4 Ohms | Channel 5 – 8: up to 270 Watts RMS @ 2 Ohms |
| Amplifier technology | Class HD |
| Inputs | 6 x RCA / Cinch | 12 x Highlevel speaker input | 1 x Optical SPDIF (12 – 96 kHz) | 1 x Extension Card 2.0 | 1 x USB PerfectStream |
| Input sensitivity | RCA / Cinch: 1 – 8 Volts | Highlevel: 4 – 32 Volts |
| Input impedance | RCA / Cinch: 25 kOhms | Highlevel: 9 – 33 Ohms with ADEP.3 |
| Outputs | 8 x Speaker output | 6 x RCA / Cinch | 2 x Remote Out |
| Output voltage RCA / Cinch | 3 Volts |
| Frequency response | 15 Hz – 22,000 Hz |
| DSP resolution | 64 Bit |
| DSP power | 295 MHz (1.2 billion MAC operations/second) |
| Sampling rate | 48 kHz |
| DSP type | Audio signal processor |
| Signal converters | A/D: BurrBrown 24 Bit | D/A: BurrBrown 24 Bit |
| Signal-to-noise ratio (A-weighted) | Digital input: 107 dB | Analog input: 102 dB |
| Distortion (THD @ 1 kHz, 1 W into 4 Ohms) | < 0.007 % |
| Distortion (THD+N @ 1 kHz, 1 W into 4 Ohms) | < 0.009 % |
| Damping factor | 100 |
| Operating voltage | 10.5 – 18 Volts (max. 5 sec.down to 6 Volts) |
| Power rating | DC 12 V ⎓ 110 A max. |
| Idle current | 750mA |
| Max. remote output current | 500 mA |
| Operating temperature range | -40 °C to +70 °C |
| Fuse | 2 x 40 A LP-Mini-fuse (APS) |
| Additional features | 32 Bit CoProcessor, Extension Card 2.0 slot, ADEP.3 circuit, Auto Remote switch, Smart Control Port, USB-C, USB PerfectStream |
| Dimensions (H x W x D) | 44 x 220 x 180 mm / | 1.73 x 8.66 x 7.09” |
| Product properties | |
| Dimensions – width | < 250 mm, < 300 mm, < 350 mm, < 400 mm, < 450 mm |
| Dimensions – depth | < 200 mm, < 250 mm, < 300 mm, < 350 mm, < 400 mm, < 450 mm |
| Dimensions – height | < 50 mm, < 60 mm |
| Output power @ 4 Ohms | > 30 Watt, > 50 Watt, > 100 Watt |
| Output power @ 2 Ohms | > 30 Watt, > 50 Watt, > 70 Watt, > 100 Watt, > 200 Watt |
| Load stability | 2 Ohm, 4 Ohm |
| Signal-to-noise ratio | > 80 dB, > 85 dB, > 90 dB, > 95 dB, > 100 dB |
| THD | < 0,01 %, < 0,05 %, < 0,1 %, < 0,2% |
| Advanced features | ACO platform, ADEP highlevel input, Auto remote switch, Extension Card 2.0, Integrated DSP, Regulated power supply, Smart Control Port, Start-Stop capability, USB PerfectStream |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU HA18207. Review the listed inputs, outputs, impedance and system requirements before ordering.
Technical information verified against the official Audiotec Fischer product page.
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