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Helix V Twelve DSP MK2 12-Channel Pure Class GD Amplifier with 14-Channel DSP
A 12-channel Pure Class GD amplifier with integrated 14-channel DSP from Helix, the V Twelve DSP MK2 delivers 12 x 75W RMS at 4Ω (up to 160W RMS per channel at 2Ω), with 12 high-level ADEP.3 inputs (up to 32V), 6 RCA inputs, optical SPDIF, 1:1 IOR, BurrBrown 24-bit converters, 64-bit DSP at 295 MHz, ACO 32-bit CoProcessor, ISA, TuneEQ, VCP, Augmented Bass Processing, RealCenter, HEC slot, SCP Smart Control Port, and Auto Remote, in an ultra-compact 44 x 220 x 220mm housing.
Product Overview
The Helix V Twelve DSP MK2 is the second generation of the V Twelve DSP, described as the new king of multitools for upgrading premium sound systems in modern vehicles. The V Twelve DSP MK2 combines 12 high-level inputs, 6 RCA inputs, a 14-channel DSP, and 12 amplifier output stages in an ultra-compact 44 x 220 x 220mm square housing - approximately the footprint of two envelopes - making it the most channel-dense amplifier in the Helix NEXT range.
Pure Class GD technology delivers outstanding sound quality combined with maximum efficiency and very low heat dissipation. The 12 amplifier channels deliver 12 x 75W RMS at 4Ω and 12 x 120W RMS at 2Ω, with maximum output of up to 160W RMS per channel at 2Ω in typical multi-channel applications. The 64-bit fixed-point DSP runs at 295 MHz (1.2 billion MAC operations per second) with BurrBrown 24-bit A/D and D/A converters, 48kHz sampling rate, SNR of 107dB from digital input and 102dB from analog input, and THD below 0.015%.
The 12 high-level ADEP.3 inputs (max. 16V or 32V switchable sensitivity, 9-33Ω with ADEP.3) and 6 RCA inputs (max. 4V or 8V switchable) cover all OEM and aftermarket integration scenarios. The 1:1 IOR (Input-to-Output Routing) directly maps the same number of high-level inputs to amplifier output channels for straightforward multi-channel system replacement. VCP cross-channel group equalizers and multi-way speaker configuration handle the most complex system architectures. The HEC slot accepts optional Bluetooth HD streaming and USB high-resolution audio streaming cards. Two RCA outputs provide 3V for connecting external amplifiers. The SCP Smart Control Port connects optional remote controls and accessories. Operating voltage is 10.5-16V with Start-Stop capability to 6V. Fused at 2 x 30A LP-Mini (APS).
Features & Benefits
Pure Class GD Technology - Outstanding Sound Quality with Maximum Efficiency: Pure Class GD dynamically controls the internal supply voltage in response to the amplifier's input signal, delivering exceptional sound quality with the efficiency and low heat dissipation required for a 12-channel amplifier in a compact housing.
12-Channel Output - 12 x 75W RMS at 4Ω / Up to 160W RMS at 2Ω: All 12 channels deliver 75W RMS at 4Ω and 120W RMS at 2Ω, with maximum output of up to 160W RMS per channel at 2Ω, providing substantial power reserves for complete premium multi-channel speaker systems from a single amplifier unit.
14-Channel Integrated DSP - 64-Bit Fixed-Point at 295 MHz: The 14-channel DSP delivers 64-bit fixed-point audio processing at 295 MHz (1.2 billion MAC operations per second) for complex multi-channel equalisation, crossover, time alignment, and sound effect processing across all 12 amplifier output channels plus 2 additional DSP channels.
12 High-Level ADEP.3 Inputs - Switchable Up to 32V: The 12 high-level ADEP.3 inputs with switchable sensitivity of max. 16V or max. 32V cover the full range of factory OEM head unit output levels from standard to high-output Harman, Bose, Burmester, and other premium factory audio systems. The dual-range 9-33Ω (ADEP.3) and 20kΩ switchable input impedance further extends OEM integration compatibility.
1:1 IOR - Direct 12-Channel Input-to-Output Routing: The same number of high-level inputs (12) as amplifier output channels (12) enables 1:1 direct channel-for-channel routing, allowing each factory speaker channel to be directly mapped to its corresponding amplifier output for straightforward and logical 12-channel system replacement.
6 RCA and 12 High-Level Inputs - Maximum Integration Flexibility: Both RCA (max. 4V or 8V switchable) and high-level inputs can be used simultaneously, providing maximum flexibility for mixed OEM and aftermarket source configurations in complex system architectures.
ACO 32-Bit CoProcessor - ISA, TuneEQ, VCP, RealCenter, Augmented Bass Processing: The ACO CoProcessor handles ISA with InputEQ for OEM signal analysis and correction, TuneEQ automated parametric EQ calibration via measurement microphone, VCP cross-channel group equalizers, RealCenter dynamic center image synthesis, Augmented Bass Processing (Dynamic Bass Enhancement and SubXpander), and volume-dependent loudness processing.
VCP - Virtual Channel Processing for the Most Complex 12-Channel Systems: VCP provides cross-channel group equalizers affecting multiple output channels simultaneously and multi-way speaker configuration with DSP Sound Effects, enabling highly complex 12-channel system architectures including 3-way front, 3-way rear, and subwoofer configurations to be implemented and tuned with precision.
Ultra-Compact 12-Channel Housing - 44 x 220 x 220mm: The V Twelve DSP MK2 packs 12 amplifier channels, 14 DSP channels, 12 high-level inputs, and 6 RCA inputs into a 44 x 220 x 220mm housing, the most channel-dense format in the Helix range.
HEC Slot - Helix Extension Card for System Expansion: The HEC slot accepts optional Bluetooth HD audio streaming and USB high-resolution audio streaming expansion cards for tailored system configuration.
2 RCA Outputs and SCP Smart Control Port: Two RCA outputs at 3V provide connection for external amplifiers. The SCP Smart Control Port connects optional remote controls and accessories.
Auto Remote Switch and Start-Stop Capability: Auto Remote activates the amplifier from the audio signal. Start-Stop capability maintains stable operation during voltage drops to 6V for up to 5 seconds.
What's in the Box
- Helix V Twelve DSP MK2 Amplifier
- 1 x Control Input-to-SCP Adaptor
- 1 x USB Cable
- 2 x Allen Key
- Mounting Material
- Instruction Manual
Technical Specs
| Specification | Detail |
|---|---|
| SKU | V TWELVE DSP MK2 |
| Brand | Helix |
| Range | NEXT Series |
| Channels | 12 (Amplifier) / 14 (DSP) |
| Amplifier Class | Pure Class GD |
| Power RMS - All Channels at 4Ω | 12 x 75W |
| Power RMS - All Channels at 2Ω | 12 x 120W |
| Max Output per Channel at 2Ω | Up to 160W |
| THD | Less than 0.015% |
| Damping Factor | Greater than 70 |
| RCA Inputs | 6 x RCA (Max. 4V or 8V Switchable) |
| High-Level Inputs | 12 x High-Level ADEP.3 (Max. 16V or 32V Switchable) |
| RCA Input Impedance | 12kΩ |
| High-Level Input Impedance | 9-33Ω (ADEP.3) or 20kΩ Switchable |
| Digital Input | 1 x Optical SPDIF (12-96kHz) |
| Outputs | 12 x Speaker, 2 x RCA (3V), 2 x Remote Out |
| Frequency Response | 20Hz-22,000Hz |
| SNR - Digital Input | 107dB (A-weighted) |
| SNR - Analog Input | 102dB (A-weighted) |
| DSP Resolution | 64-Bit Fixed-Point |
| DSP Processing Power | 295 MHz (1.2 Billion MAC ops/sec) |
| Sampling Rate | 48kHz |
| Signal Converters | BurrBrown 24-Bit A/D and D/A |
| CoProcessor | ACO 32-Bit |
| HEC Slot | Yes (Helix Extension Card) |
| SCP | Yes (Smart Control Port) |
| 1:1 IOR | Yes |
| Operating Voltage | 10.5-16V (Stable to 6V for 5 Seconds) |
| Power Rating | DC 12V, 80A Max |
| Idle Current | 700mA |
| Max Remote Output Current | 500mA |
| Fuse | 2 x 30A LP-Mini (APS) |
| Dimensions | 44mm x 220mm x 220mm |
DSP Features
| Feature | Detail |
|---|---|
| ISA | Input Signal Analyzer with InputEQ for OEM signal correction |
| TuneEQ | Automated parametric EQ calibration via measurement microphone |
| VCP | Virtual Channel Processing with cross-channel group EQ |
| 1:1 IOR | Yes (12 inputs to 12 output channels) |
| RealCenter | Dynamic center image synthesis |
| Augmented Bass Processing | Dynamic Bass Enhancement and SubXpander |
| DLC | Dynamic Loudness Control |
| RTC | Remote Tone Control |
Compatible With
The V Twelve DSP MK2 is compatible with 10.5-16V vehicle electrical systems. High-level ADEP.3 inputs support factory OEM head units at up to 32V with dual sensitivity range switching. RCA inputs suit aftermarket head units at up to 4V or 8V. Optical SPDIF input accepts 12-96kHz digital signals. HEC expansion modules are sold separately. DSP configuration via DSP PC-Tool software (refer to Helix/Audiotec Fischer for version compatibility).
Frequently Asked Questions
What makes the V Twelve DSP MK2 suited to premium factory sound system upgrades?
The V Twelve DSP MK2 provides 12 high-level ADEP.3 inputs with up to 32V sensitivity and dual impedance switching, enabling direct connection to even the most demanding premium factory audio systems including Harman, Bose, Burmester, and JBL configurations. The 1:1 IOR directly replaces each factory speaker channel with a dedicated amplifier output channel, and the 14-channel DSP with ISA and InputEQ corrects any factory EQ processing applied to the input signals.
What is the difference between the V Twelve DSP MK2 and the V Eight DSP Ultimate?
The V Twelve DSP MK2 provides 12 amplifier channels and 14 DSP channels using Pure Class GD technology, optimised for maximum channel count in a compact housing for complete premium OEM system replacement. The V Eight DSP Ultimate provides 8 amplifier channels and 14 DSP channels using Class HD technology with USB PerfectStream, Extension Card 2.0, and higher per-channel maximum power output. Choose the V Twelve DSP MK2 for 12-channel system replacement; choose the V Eight DSP Ultimate for 8-channel systems requiring maximum output power and USB PerfectStream.
Does the V Twelve DSP MK2 support 1:1 channel routing?
Yes. The 1:1 IOR (Input-to-Output Routing) directly maps all 12 high-level inputs to the 12 corresponding amplifier output channels for straightforward channel-for-channel factory system replacement.
Is the V Twelve DSP MK2 compatible with Start-Stop vehicles?
Yes. The Start-Stop capable power supply maintains stable operation during voltage drops to 6V for up to 5 seconds, ensuring uninterrupted operation during engine cranking in Start-Stop equipped vehicles.
What optional accessories work with the V Twelve DSP MK2 HEC slot?
The HEC (Helix Extension Card) slot accepts optional Bluetooth HD audio streaming and USB high-resolution audio streaming expansion modules. HEC accessories are sold separately.
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