Walrus Audio Warhorn – Mid-Range Overdrive Warm, musical, and endlessly versatile, the Walrus Audio Warhorn is a mid-range overdrive built to push your amp into that sweet spot between clean and completely broken up. With intuitive controls that shape gain, tone, and a focused midrange boost, it excels at everything from light, transparent grit to full, singing overdrive, making it an effortless fit for players across virtually any genre or playing style.