Helix P Six DSP Ultimate 6 Channel Amplifier 12 Channel DSP 64 Bit HI Res Audio

The Helix P Six DSP Ultimate is a 6-channel Ultra HD Class D amplifier with an integrated 12-channel 64-bit TwinDSP processor, delivering 6 x 120W RMS at 4 ohms and up to 285W RMS per channel at 2 ohms. It is part of the Helix P Series range and supports 12V and 24V operation with optical and coaxial digital inputs for high-resolution audio upgrades on factory or aftermarket systems.

Key specifications

• Amplifier: 6 channel Ultra HD Class D
• Power @ 4 ohms: 6 x 120W RMS
• Power @ 2 ohms: 4 x 230W RMS (channels C – F)
• DSP: 12 channel, 64-bit TwinDSP, 96 kHz sampling
• Inputs: 6 x RCA, 6 x highlevel (up to 32V), optical and coaxial SPDIF
• Outputs: 4 x RCA, 1 x optical SPDIF
• Operating voltage: 10.5 – 32V (12V or 24V)
• Dimensions (H x W x D): 50 x 260 x 190 mm

6-channel amplifier with 12-channel 64-bit DSP

The P Six DSP Ultimate combines up to 285W RMS per channel into 2 ohms with a 12-channel integrated signal processor running dual 64-bit Analog Devices DSPs at 2.4 billion MAC operations per second. The Ultra HD Class D design targets the sound characteristics of Class AB technology with the efficiency of a digital amplifier. Features include the ACO platform, an optical digital output, and VCP (Virtual Channel Processing) for complex system configurations.

• Up to 285W RMS output power per channel into 2 Ω
• Ultra HD Class D — combines Class AB sound quality with Class D efficiency
• TwinDSP Power — two 64-bit fixed-point audio DSPs with 2.4 billion MAC operations per second
• BurrBrown A/D and D/A signal converters
• VCP (Virtual Channel Processing) for flexible configuration of complex sound systems
• ACO – Advanced CoProcessor for extended feature set
• ISA (Input Signal Analyzer) and InputEQ for input signal analysis and compensation
• Proprietary TuneEQ for automated output equaliser adjustment
• SFX (DSP Sound Effects) — Augmented Bass Processing, RealCenter and more
• 6-channel highlevel input with up to 32V RMS input sensitivity and ADEP.3 circuit
• Optical (max. 96 kHz) and coaxial (max. 192 kHz) SPDIF digital inputs
• 4 x RCA/Cinch outputs with max. 3V output voltage
• Optical SPDIF digital output at 96 kHz
• Smart Control Port (SCP) for remote controls and accessories
• HEC slot for system expansions including Bluetooth HD Audio Streaming and High Resolution Audio Streaming via USB
• Automatic remote switch
• Start-Stop capability down to 6V supply voltage
• Compact design with low heat dissipation

State-of-the-art TwinDSP technology

The P Six DSP Ultimate uses two 64-bit audio signal processors from Analog Devices, delivering 2.4 billion MAC operations per second. Combined with a 96 kHz sampling rate, an audio bandwidth of over 40 kHz, and BurrBrown A/D and D/A converters, the result is high-resolution audio quality. The full signal path — including the power supply — has been optimised throughout.

Connectivity and flexibility

With 6 x highlevel, 6 x RCA, 1 x optical SPDIF, 1 x coaxial SPDIF, 1 x HEC slot, 4 x line output and 1 x optical output, the P Six DSP Ultimate adapts easily to factory radios and multi-channel OE sound systems. The highlevel input accepts up to 32V RMS, allowing connection to high-power OE amplifiers. The optical digital output enables a fully digital signal chain with compatible downstream amplifiers. VCP (Virtual Channel Processing) adds further flexibility for complex system builds. If you need a dedicated subwoofer channel, the Helix M One X mono amplifier pairs well alongside.

Ultra HD Class D amplifier technology

Ultra HD Class D extends the frequency response to beyond 40 kHz and reduces distortion through an advanced integrated feedback design. The result is Class AB-like sound quality with the efficiency of a Class D amplifier.

TwinDSP Power

Two 64-bit audio DSPs from Analog Devices deliver a combined 2.4 billion MAC operations per second. This processing power enables twelve separately processed channels, the full suite of sound features, and a 96 kHz sampling rate with an audio bandwidth of more than 40 kHz.

12V and 24V operation

The P Six DSP Ultimate operates on 12V or 24V supply without modification — useful for truck installations. Performance characteristics remain equal in both operating modes, giving maximum flexibility across a wide range of applications.