Boss Waza Tube Amp Expander Reactive Load Box w/ Analog Power Stage

The Waza Tube Amp Expander solves the age-old dilemma of tube amp players who crave that sweet spot cranked-up tone without the ear-splitting volume. This comprehensive device functions as a variable reactive load box, active analog power stage, mic’d cab emulator, IR loader, and recording interface all rolled into one road-ready unit. BOSS’s advanced Tube Logic approach ensures your amp’s core tone and feel remain faithfully intact while giving you complete volume control for any performance or recording scenario.

Unlike traditional load boxes and volume attenuators that introduce unwanted artifacts, the Waza Tube Amp Expander’s reactive load section maintains your amp’s true character and dynamic response. The innovative Resonance-Z and Presence-Z controls optimise impedance interaction with your amp’s output transformer across sixteen different settings, making your amplifier behave exactly as if connected to your preferred speaker cabinet. Any tube guitar amp up to 150 watts is supported, from classic vintage combos through to modern high-gain heads.

The built-in effects engine adds significant sonic versatility, particularly valuable for vintage amps lacking effects loops. Premium 32-bit AD/DA conversion with 32-bit floating-point processing at 96 kHz sampling delivers exceptional sound quality alongside true stereo operation. Onboard compressor, delay, and reverb effects offer extensive customisation through dedicated editor software, while four strategic EQ options allow precise tone shaping throughout the signal path. The external effects loop supports both series and parallel operation for line-level devices and standard stompbox effects, plus 10 fully customisable rig setups provide comprehensive real-time control for any musical situation.