The Poly Effects Trails is a high-performance stereo multi-effects processor built on an open-source platform, offering an expansive suite of reverb, delay, and modulation algorithms. It leverages advanced signal processing techniques, including granular synthesis and convolution reverb, to create intricate soundscapes and atmospheric textures. The pedal is centered around a large touchscreen interface that allows for intuitive routing and real-time parameter manipulation. It features robust connectivity options, including full MIDI implementation, CV inputs for modular integration, and USB-host capabilities. The hardware is engineered for low latency and high-fidelity audio, catering to both studio production and live performance environments. Trails is designed as a deep sound-design tool for musicians seeking to push the boundaries of traditional spatial effects.