【HELIX UP-8DSP | DSP with 9ch, DSP amplifier with built-in 8ch power amplifiers】

HELIX UP-8DSP is designed for those who want to fine-tune their factory audio sound a bit more, or for those who feel that simply replacing the speakers isn’t quite enough.

Because it integrates an 8ch power amplifier and a 9ch DSP processor, you can adjust everything in detail—such as volume level, timing, and band-by-band balance—while the speakers inside the car are playing. This model makes it easier to create audio tailored to the limited cabin space, for example by positioning the vocals properly and reworking the connection of the bass.

The amplifier section supports 6ch at 65W when 4Ω is used, and 2ch for a subwoofer at 160W when 2Ω is used. In addition, it includes 1ch pre-out, making it easier to accommodate plans to add an external amplifier in the future. Designed with consideration for factory multi-channel systems and complex signal configurations, it can be flexibly combined with factory audio environments that vary by vehicle model.

A DSP amplifier isn’t a product where the sound is complete just by installing the main unit. The final result changes depending on how you extract the input signals, how you pair it with the speakers, the installation method, and the adjustments made to suit the vehicle interior. If I were setting it up, I would check the vehicle model, the factory system, and the music you usually listen to—then design the configuration including the required number of channels and even the addition of an external amplifier.

If you want to “keep the convenience of the factory setup, but make the sound easier to listen to,” “properly fine-tune the sound after replacing the speakers,” or “choose a DSP amplifier that you can upgrade later,” please feel free to consult us. Let’s organize a sensible configuration together based on your vehicle.

■ Main Specifications / Specs

【Basic Information】

• Product name: UP-8DSP
• Brand: HELIX
• Type: 9ch DSP amplifier with built-in 8ch power amplifier
• Operation method: Class GD

【Amplifier Output】

• Output configuration: 6ch + 2ch (for subwoofer)
• At 4Ω: 65W × 6ch
• At 2Ω: 160W × 2ch
• Pre-out: 1ch

【DSP】

• DSP channels: 9ch
• DSP: 64-bit
• Clock: 295MHz
• Time alignment: Supported
• Equalizer: Supported
• Crossover: Supported
• Adjustment resolution: in 0.1dB steps

【Sound Quality / Performance】

• A/D & D/A converter: 24-bit Burr Brown
• S/N ratio: up to 106dB
• Distortion: 0.03% or less
• Frequency response: 20Hz to 22kHz (+0/−1dB)

【Input / Compatibility with Factory Systems】

• High-level input: 6ch
• MEC ANALOG IN: Supported
• Analog input: up to 8ch
• Signal mix: up to 4 channels/paths
• ADEP.3: Supported

【Connections / Operation】

• PDIF (TOS link) input: Supported
• USB mini: for PC connection
• SPC terminal: Built-in
• Auto power ON/OFF switch: Built-in