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Helix Amplify 206 Direct 6-Channel Fully Bridgeable Class D Amplifier with DirectDSP Inputs
A 6-channel fully bridgeable Class D amplifier from the Helix Amplify 2-Series, the Amplify 206 Direct delivers 6 x 100W RMS at 4Ω, 6 x 190W RMS at 2Ω, and 3 x 380W RMS bridged at 4Ω (up to 240W per channel at 2Ω, 480W bridged), with 6 DirectDSP RCA inputs (1-8V), clipping LED for gain calibration, 103dB SNR at full power, THD below 0.003% at 1kHz, stereo/mono switch for bridged single-RCA operation, flexible 3, 4, 5, and 6-channel configurations, Start-Stop capability, and a removable top cover in a compact 40 x 263 x 114mm housing.
Product Overview
The Helix Amplify 206 Direct is the 6-channel DirectDSP variant of the Amplify 2-Series, purpose-built as a transparent and powerful amplification stage for DSP-based audio systems in modern vehicles. It is the most versatile multi-channel amplifier in the Amplify 2-Series Direct range, adding a 6th channel pair over the Amplify 204 Direct and enabling fully active 3-way front system configurations, 5-channel front/rear/subwoofer layouts, and complete 6-channel multi-way active system architectures from a single amplifier unit in combination with an external DSP processor.
The fully bridgeable 6-channel architecture delivers 6 x 100W RMS at 4Ω and 6 x 190W RMS at 2Ω in 6-channel mode, with 3 x 380W RMS bridged at 4Ω (up to 480W bridged maximum per channel pair) when configured in a 3-channel bridged layout. The flexible channel pairing allows operation in 3, 4, 5, or 6-channel configurations to suit a wide range of system architectures. Maximum output per channel is up to 240W RMS at 2Ω.
As the DIRECT variant, the Amplify 206 features DirectDSP RCA inputs that eliminate conventional input filtering stages entirely, preserving uncompromised signal integrity from the connected DSP processor output through to the speaker outputs. The 6 DirectDSP RCA inputs accept 1-8V with a 6kΩ input impedance. The stereo/mono switch on each stereo input pair allows bridged mono operation from a single RCA channel, eliminating the need for external Y-adaptors. A clipping LED provides real-time visual feedback for fast and precise gain calibration. SNR is 103dB at full power and THD at 1kHz below 0.003%. Operating voltage is 10.5-16V with Start-Stop capability to 6V. Fused at 3 x 25A LP-Mini (APS) for up to 93A maximum power draw.
Features & Benefits
6 x 100W RMS at 4Ω / 3 x 380W RMS Bridged - Maximum Configuration Flexibility: Delivers 6 x 100W RMS at 4Ω, 6 x 190W RMS at 2Ω, or 3 x 380W RMS bridged at 4Ω (up to 480W bridged maximum), covering fully active 3-way front systems in 6-channel mode, 5-channel front/rear/subwoofer layouts, and classic 3-channel bridged configurations from a single amplifier unit.
Flexible 3, 4, 5, and 6-Channel Operation: The fully bridgeable 6-channel architecture can be configured in 3, 4, 5, or 6-channel operating modes, adapting to a wide range of vehicle and system requirements from complex fully active 3-way front systems to classic front/rear/bridged subwoofer 5-channel layouts.
DirectDSP Inputs - Designed for External DSP Processors: The DirectDSP input design eliminates conventional input filtering stages to ensure uncompromised signal integrity and maximum clarity from the DSP processor output. The minimal input architecture keeps noise and distortion at their absolute minimum, delivering the cleanest possible amplification of the processed DSP signal across all 6 channels.
Stereo/Mono Switch - Bridged Operation from Single RCA Input: A stereo/mono switch for each stereo input pair allows bridged mono operation from a single RCA channel, eliminating the need for external Y-adaptors when only one DSP output channel is available for a bridged channel pair.
103dB SNR at Full Power - THD Below 0.003% at 1kHz: Delivers 103dB SNR (A-weighted) at full power and THD at 1kHz below 0.003%, providing audio performance that exceeds conventional 6-channel amplifier standards in the same class.
6kΩ Input Impedance - Minimal Loading on DSP Outputs: The 6kΩ input impedance presents minimal loading on the upstream DSP processor's output stage, preserving signal integrity and preventing impedance-related signal level variations across all 6 input channels.
Clipping LED for Fast and Precise Gain Adjustment: The clipping LED provides real-time visual indication of amplifier clipping during gain calibration across all channel pairs, enabling fast and accurate level setting without external measurement equipment.
No Input Filtering - Uncompromised Signal Path: The DIRECT variant has no highpass, lowpass, or any other filter controls. All signal processing, crossover, and time alignment functions are handled entirely by the upstream DSP processor, preventing double-filtering artefacts and preserving complete signal integrity.
Advanced Class D - High Efficiency and Low Heat Dissipation: The advanced Class D concept delivers high efficiency and very low heat dissipation, enabling 6 x 190W RMS at 2Ω from a compact 40 x 263 x 114mm housing.
Removable Top Cover - Clean Appearance and Connection Protection: The removable top cover conceals all connections and controls when installed, providing a clean streamlined appearance and additional protection for wiring and gain adjustments.
Start-Stop Capable - 10.5-16V Operating Range: Start-Stop capable power supply maintains stable operation during voltage drops to 6V for up to 5 seconds.
What's in the Box
- Helix Amplify 206 Direct Amplifier
- 2 x Allen Key
- Mounting Material
- 1 x Connection Cable
- 3 x Fuse
- Instruction Manual
Technical Specs
| Specification | Detail |
|---|---|
| SKU | AMPLIFY 206 DIRECT |
| Brand | Helix |
| Range | Amplify 2-Series |
| Variant | Direct (DirectDSP Inputs) |
| Channels | 6 (Fully Bridgeable) |
| Amplifier Class | Class D |
| Built-in DSP | No |
| Power RMS - 6Ch at 4Ω (14.4V) | 6 x 100W |
| Power RMS - 6Ch at 2Ω (14.4V) | 6 x 190W |
| Power RMS - Bridged 3Ch at 4Ω | 3 x 380W |
| Max Output per Channel at 2Ω | Up to 240W RMS |
| Max Output Bridged at 4Ω | Up to 480W RMS per Channel Pair |
| THD at 1kHz, 1W into 4Ω | Less than 0.003% |
| THD+N at 1kHz, 1W into 4Ω | Less than 0.015% |
| SNR at Full Power | 103dB (A-weighted) |
| Damping Factor | 70 |
| RCA Inputs | 6 x RCA DirectDSP (1-8V, 6kΩ) |
| High-Level Inputs | None |
| Input Type | DirectDSP |
| Outputs | 6 x Speaker |
| RCA Preout | None |
| Frequency Response | 10Hz-22,000Hz |
| Highpass Filter | None (DIRECT variant) |
| Lowpass Filter | None (DIRECT variant) |
| Stereo/Mono Switch | Yes (per stereo input pair) |
| Clipping LED | Yes |
| ADEP.3 | None (DIRECT variant) |
| Auto Turn-On | None (DIRECT variant) |
| Operating Voltage | 10.5-16V (Stable to 6V for 5 Seconds) |
| Power Rating | DC 12V, 93A Max |
| Idle Current | 1100mA |
| Fuse | 3 x 25A LP-Mini (APS) |
| Operating Temperature | -40°C to +70°C |
| Start-Stop Capable | Yes |
| Top Cover | Removable |
| Dimensions | 40mm x 263mm x 114mm |
Compatible With
The Amplify 206 Direct is compatible with 10.5-16V vehicle electrical systems. RCA inputs accept 1-8V from DSP processor outputs. The Amplify 206 Direct has no high-level inputs, no RCA preout, and no onboard filtering. All crossover and signal processing must be handled by the upstream DSP processor. Confirm channel bridging configuration and minimum speaker impedance (4Ω for bridged) before purchase. Designed for use with Helix and Match DSP amplifiers and processors including the V Eight DSP Ultimate, P Six DSP Ultimate, Match UP 8DSP, Match UP 10DSP MK2, Match UP 6DSP, and other compatible DSP sources.
Frequently Asked Questions
What is the difference between the Amplify 206 Direct and the Amplify 204 Direct?
Both are Class D DIRECT variants with identical specifications per channel, DirectDSP inputs, no onboard filtering, and no high-level inputs. The Amplify 206 Direct adds a 3rd output channel pair (channels 5-6) over the Amplify 204 Direct, expanding from 4 to 6 channels and from 2 bridged channel pairs to 3, enabling fully active 3-way front system configurations and 5-channel front/rear/subwoofer layouts from a single amplifier unit.
What DSP configurations is the Amplify 206 Direct best suited for?
The Amplify 206 Direct is specifically suited for fully active 3-way front systems (channels 1-6 driving tweeter, midrange, and midbass for left and right), 5-channel layouts (channels 1-4 for front and rear speakers, channels 5-6 bridged for a subwoofer), and any 6-channel multi-way active configuration in combination with a Helix or Match DSP processor.
Does the Amplify 206 Direct work with the Match UP 6DSP?
Yes. The Amplify 206 Direct's 6 DirectDSP RCA inputs are matched to the 6 RCA outputs of the Match UP 6DSP, making this combination a natural pairing for a complete 6-channel active system with all DSP processing handled by the UP 6DSP and clean power amplification by the Amplify 206 Direct.
Does the Amplify 206 Direct have any onboard filters?
No. The Amplify 206 Direct has no highpass, lowpass, subsonic, or any other filter controls. All signal processing and crossover functions must be handled by the upstream DSP processor.
What is the stereo/mono switch on the Amplify 206 Direct?
A stereo/mono switch on each stereo input pair allows bridged mono operation from a single RCA input per channel pair, eliminating the need for an external Y-adaptor when only one DSP output channel is available for a bridged pair.
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