Advanced Creative Tools for Studio-Grade Tube Amp Tones The WAZA Tube Amp Expander Core is a professional recording solution for capturing tube amp tones with exceptional quality. Our Tube Logic approach and reactive load design retain your amp’s natural feel and touch response, while premium cab emulation and studio processing make it simple to craft high-impact direct sounds. Creative options include a helpful Mix Assist tool that ensures tracks fit perfectly within every mix, plus a unique Air Feel feature that authentically recreates “amp-in-room” sound with advanced spatial technology. And with the integrated 30-watt reactive drive power amp and your favorite cab, you can enjoy “sweet spot” amp tones at home-friendly levels.