Some full presets are tuned for 44.1kHz. If you run at 48kHz, the filter frequencies shift. Fix: Re-load the preset after changing the sample rate, or stick to 44.1kHz.
You have a clipper in Stereo Tool (set to -1dB) AND a clipper in your encoder (set to -0.1dB). Fix: Disable the encoder's limiter. Let Stereo Tool do the clipping. stereo tool preset full
A "full" preset usually introduces 20ms to 50ms of latency. Do not use a full preset for live DJ monitoring (headphones). Use a "low latency" preset for monitoring and route the "full" preset to the stream output. The Future: Declipper and Natural Dynamics Presets The latest evolution of the Stereo Tool preset full includes the Declipper module. This rebuilds peaks that were clipped by poor MP3 encoding. Newer presets by developer Leif Claesson focus on "Natural Dynamics"—loudness without the "wall of sound" fatigue. If you see a preset labeled "Natural V3" or "Full Declipper," download it immediately. Conclusion: Stop Tweaking, Start Broadcasting The beauty of a Stereo Tool preset full is that you stand on the shoulders of audio engineers who have spent years perfecting their curves. You do not need to understand attack ratios or release hysteresis to sound like a professional radio station. Some full presets are tuned for 44