The Ground Zero Sound Upgrade GZDSP 4-8XII is a compact 8 channel digital signal processor designed to bring precise control and cleaner sound to factory and aftermarket audio systems. Part of the Sound Upgrade series, it offers a flexible setup with 4 channel RCA input or 4 channel speaker level input, making it a strong solution for a wide range of vehicle installations. With 8 channel RCA output, it gives installers the ability to build a detailed, fully tuned sound system with exceptional channel management.

Engineered for advanced tuning, this DSP features 48kHz sampling and 56bit processing for accurate signal handling, plus PC and app control for easy adjustment. The 10 band PEQ equaliser, selectable HP, BP and LP crossovers, and 6 to 24dB per octave filter options allow fine control over frequency response and system balance. Its compact 168 x 114 x 27mm housing makes it easy to integrate behind dashboards or under seats without taking up valuable space.

Additional features include optional Bluetooth and optional DSP controller support, giving you more ways to manage your audio setup. With a design focused on sound shaping, time alignment and system optimisation, the GZDSP 4-8XII is ideal for drivers who want to unlock the full potential of their speakers and amplifiers while maintaining a clean and efficient installation.

Features & Benefits

• 8 channel DSP for advanced multi speaker system tuning
• 4 channel RCA and 4 channel speaker level input for installation flexibility
• 8 channel RCA output for comprehensive signal distribution
• PC and app control for quick and convenient adjustments
• 10 band PEQ and selectable crossover settings for precise sound shaping
• Compact size for simple hidden mounting in modern vehicles