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Helix Next V Two 2-Channel Class D Amplifier 800W Bridged with Auto Gain Ranging and V-AMP Link
A 2-channel Class D amplifier from the Helix NEXT V Series, the V Two delivers 2 x 200W RMS at 4Ω, 2 x 400W RMS at 2Ω, and 800W RMS bridged at 4Ω (up to 1000W RMS bridged maximum), with the innovative ACP (Amplifier Control Panel) featuring Auto Gain Ranging (AGR), manual gain adjustment in 0.5V steps, V-AMP Link high-level input for Helix V Series amplifier expansion, DirectDSP RCA inputs, Mono/Stereo Mode switch, Stabilized Output Power (SOP) technology, clipping indicator, Auto Remote, Start-Stop capability, and 10.5-18V extended operating range for EV compatibility.
Product Overview
The Helix Next V Two is a 2-channel bridgeable amplifier from the Helix NEXT V Series, combining audiophile sound aspirations with impressive output performance in the compact 44 x 220 x 180mm form factor shared with the V Eight DSP Ultimate. The advanced Class D topology delivers exceptional audio specifications: SNR of 109dB, THD at 1kHz below 0.003%, THD+N below 0.004%, and a damping factor of 350, alongside a wideband frequency response of 10Hz to 22kHz.
In stereo operation the V Two delivers 2 x 200W RMS at 4Ω and 2 x 400W RMS at 2Ω for demanding midbass and full-range speaker applications. In bridged mono mode it delivers 800W RMS at 4Ω (up to 1000W RMS maximum) for driving high-performance subwoofers including dual voice coil DVC2 subwoofers wired to a 2Ω per channel load and HELIX IMPACT series subwoofers.
The centrepiece of the V Two is the new ACP (Amplifier Control Panel), a push-button interface with LED indicators that controls Auto Gain Ranging (AGR), manual gain setting (0.5-8V in 0.5V steps), input mode, and input reference configuration. The AGR function automatically detects the output voltage of the connected signal source and sets the gain in seconds without clipping, eliminating manual trial-and-error gain calibration. The V-AMP Link is a purpose-built high-level input (1.5-21V, 13Ω) optimised for connection to the speaker outputs of Helix V Series amplifiers, enabling multiple V Two units to be integrated into complex multi-amplifier systems without an additional line-level output from the main amplifier. The DirectDSP RCA inputs (0.5-8V, 3kΩ) provide a wideband linear input path specifically tailored to DSP processor outputs with no crossover filtering. Stabilized Output Power (SOP) technology maintains consistent output levels during vehicle electrical system voltage fluctuations. Operating voltage is 10.5-18V with Start-Stop capability to 6V, supporting EV, mild hybrid, and advanced vehicle electrical platforms. Fused at 3 x 30A LP-Mini (APS). The integrated Mono/Stereo Mode (MSM) switch configures the amplifier as a stereo unit or bridged mono power amplifier.
Features & Benefits
800W RMS Bridged at 4Ω - Up to 1000W RMS Maximum: Delivers 2 x 200W RMS at 4Ω, 2 x 400W RMS at 2Ω in stereo, and 800W RMS at 4Ω bridged (up to 1000W RMS maximum), providing substantial power reserves for both full-range stereo speaker applications and high-performance subwoofer applications from a single compact amplifier.
ACP - Amplifier Control Panel with Auto Gain Ranging (AGR): The innovative Amplifier Control Panel provides push-button control of all key amplifier functions with LED visual feedback. The AGR (Auto Gain Ranging) function automatically detects the input voltage of the connected signal source and sets the optimal gain in seconds, ensuring maximum signal quality without clipping - eliminating manual gain calibration errors.
Manual Gain Adjustment in 0.5V Steps: For users who prefer manual calibration, the input sensitivity can be precisely adjusted from 0.5V to 8V in 0.5V increments via the ACP, with the integrated clipping indicator providing real-time visual feedback for accurate level setting.
V-AMP Link - High-Level Input Optimised for Helix V Series Amplifiers: The V-AMP Link (1.5-21V, 13Ω) is a purpose-developed high-level input specifically optimised for connection to the speaker outputs of Helix V Series amplifiers. This enables multiple V Two amplifiers to be chained into the system using the main V Series amplifier's speaker outputs as the signal source, providing maximum expansion flexibility without requiring additional RCA preout connections from the primary amplifier.
DirectDSP RCA Inputs - Linear Wideband Path for DSP Systems: The DirectDSP RCA inputs (0.5-8V, 3kΩ) provide a wideband linear input path with no crossover filtering, specifically tailored to the outputs of Helix and Match DSP amplifiers and standalone DSP processors for maximum signal transparency and sonic fidelity.
MSM - Mono/Stereo Mode Switch: The integrated MSM switch configures the V Two as a bridged mono power amplifier for subwoofer applications or as a stereo amplifier for full-range speaker channel applications, with a single input signal sufficient for full bridged mono operation via the built-in summing function.
SOP - Stabilized Output Power Technology: SOP technology maintains consistent output power levels during vehicle electrical system voltage fluctuations including dynamic alternator regulation, heavy system loads, and Start-Stop events, ensuring stable, dynamic performance under all real-world automotive conditions.
109dB SNR - THD Below 0.003% - Damping Factor 350: The V Two delivers 109dB SNR, THD at 1kHz below 0.003%, THD+N below 0.004%, and a damping factor of 350, providing audiophile-grade Class D performance that satisfies demanding music enthusiasts across both subwoofer and full-range speaker applications.
Extended Operating Voltage to 18V - EV and Hybrid Compatible: The extended operating voltage range of 10.5-18V with Start-Stop capability to 6V supports conventional combustion engines, mild hybrids, and fully electric vehicle (BEV) electrical platforms with higher and more variable supply voltages.
Auto Remote Switch: Auto Remote activates the amplifier automatically from the audio signal without requiring a separate remote wire, maximising integration flexibility.
Shared V Series Form Factor - 44 x 220 x 180mm: The V Two shares the same footprint as the V Eight DSP Ultimate, enabling uniform and visually consistent multi-amplifier installation concepts in the same chassis space.
What's in the Box
- Helix NEXT V Two Amplifier
- 2 x Allen Key
- 3 x Fuse
- Mounting Material
- Instruction Manual
Technical Specs
| Specification | Detail |
|---|---|
| SKU | NEXT V TWO |
| Brand | Helix |
| Range | NEXT V Series |
| Channels | 2 (Bridgeable) |
| Amplifier Class | Class D |
| Built-in DSP | No |
| Power RMS - 2Ch at 4Ω | 2 x 200W |
| Power RMS - 2Ch at 2Ω | 2 x 400W |
| Power RMS - Bridged at 4Ω | 1 x 800W |
| Max Output - 2Ch at 2Ω | Up to 500W per Channel |
| Max Output - Bridged at 4Ω | Up to 1000W RMS |
| THD at 1kHz, 1W into 4Ω | Less than 0.003% |
| THD+N at 1kHz, 1W into 4Ω | Less than 0.004% |
| SNR | 109dB (A-weighted) |
| Damping Factor | 350 |
| Frequency Response | 10Hz-22,000Hz |
| RCA Inputs (DirectDSP) | 2 x RCA (0.5-8V, 3kΩ) |
| V-AMP Link Inputs | 2 x High-Level (1.5-21V, 13Ω) |
| Outputs | 2 x Speaker, 2 x RCA |
| RCA Output | 2 x RCA (preout) |
| AGR - Auto Gain Ranging | Yes (Automatic Gain Detection) |
| Manual Gain Range | 0.5-8V in 0.5V Steps |
| Clipping Indicator | Yes |
| ACP - Amplifier Control Panel | Yes (Push-Button with LED Feedback) |
| MSM - Mono/Stereo Mode | Yes |
| SOP - Stabilized Output Power | Yes |
| Auto Remote | Yes |
| V-AMP Link | Yes (Helix V Series Optimised) |
| DirectDSP Input | Yes |
| Operating Voltage | 10.5-18V (Stable to 6V for 5 Seconds) |
| Power Rating | DC 12V, 86A Max |
| Idle Current | 1400mA |
| Fuse | 3 x 30A LP-Mini (APS) |
| Operating Temperature | -40°C to +70°C |
| Start-Stop Capable | Yes |
| Dimensions | 44mm x 220mm x 180mm |
Compatible With
The V Two is compatible with 10.5-18V vehicle electrical systems including EV and mild hybrid platforms. RCA DirectDSP inputs accept 0.5-8V from Helix and Match DSP amplifiers and processors. V-AMP Link accepts 1.5-21V from Helix V Series amplifier speaker outputs. The V Two includes 2 x RCA preouts. Auto Remote enables activation without a remote wire. Confirm subwoofer and speaker impedance against the 4Ω (bridged), 2Ω (stereo), or 4Ω (stereo) rated output configurations before purchase.
Frequently Asked Questions
What is Auto Gain Ranging (AGR) and how does it work?
AGR (Auto Gain Ranging) is the V Two's automatic gain calibration function, accessible via the ACP. When activated, AGR detects the output voltage of the connected signal source and automatically sets the input gain for the optimal signal-to-noise ratio without clipping. The process takes only a few seconds and eliminates the manual trial-and-error gain adjustment that is common in conventional amplifier installations. Manual fine-tuning is still available in 0.5V steps for users who prefer hands-on calibration.
What is the V-AMP Link input?
The V-AMP Link is a purpose-built high-level input (1.5-21V, 13Ω) specifically optimised for connection to the speaker outputs of Helix V Series amplifiers. Unlike a standard high-level input, the V-AMP Link is matched to the output characteristics of the V Series to ensure maximum signal quality and compatibility. It enables multiple V Two units to be integrated into a multi-amplifier system using the main V Series amplifier's speaker outputs as the input signal, without requiring a separate RCA preout or DSP channel.
Can the V Two be used as a subwoofer amplifier?
Yes. In bridged mono mode the V Two delivers 800W RMS at 4Ω (up to 1000W RMS maximum), making it well suited for driving high-performance subwoofers including dual voice coil DVC2 subwoofers at 2Ω per coil (wired to 4Ω total) and HELIX IMPACT series subwoofers. The integrated MSM switch enables bridged mono operation with a single input signal.
Is the V Two compatible with EV and mild hybrid vehicles?
Yes. The V Two operates across 10.5-18V with Start-Stop capability to 6V, supporting the higher and more variable supply voltages of electric vehicles and mild hybrid platforms, as well as conventional combustion engine vehicles.
What is the difference between the V Two and the V Eight DSP Ultimate?
The V Two is a 2-channel bridgeable amplifier without integrated DSP, featuring AGR, V-AMP Link, and SOP technology, designed to pair with a Helix or Match DSP amplifier in a multi-amplifier system. The V Eight DSP Ultimate is an 8-channel amplifier with integrated 14-channel DSP, USB PerfectStream, and Extension Card 2.0 slot. The V Two and V Eight DSP Ultimate share the same 44 x 220 x 180mm footprint for uniform installation concepts.
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