Used Boss WAZA Tube Amp Expander Core Amplifier Attenuator

The Boss Waza Tube Amp Expander Core is a powerful all-in-one solution for tube amp players looking to control volume, capture tone, and expand their rig without sacrificing feel. This reactive load box and attenuator is designed with Boss’s Tube Logic technology, delivering authentic amp response while allowing you to push your tube amp to its sweet spot at manageable levels. It features built-in cab simulation, IR support, onboard effects loop, and flexible routing options, making it a serious tool for both live and studio use.

This unit shines in real-world applications where volume control and tone consistency matter. Use it to tame a loud amp on stage, record silently with studio-quality cab sims, or integrate it into a complex rig with MIDI, USB, and line out options. The adjustable reactive load, selectable wattage settings, and Air Feel control let you fine-tune the response and feel to match your amp and playing style, whether you’re chasing cranked vintage tones or modern high-gain precision.

This example is in excellent used condition with minimal signs of wear. All functions, inputs, and outputs have been tested and are working properly. It’s a clean, fully functional unit ready to elevate your tube amp setup.

Music Go Round Aurora is a trusted local store in Colorado that buys, sells, and trades quality used instruments since 2000. Stop by to check out this Boss Waza Tube Amp Expander Core in person or order online today before it’s gone.

We are a brick-and-mortar store whose inventory comes from in-person buys and trades, so we give our local customers the first opportunity to shop. For that reason, our inventory is not available to ship for 30 days. If you are interested in this item before it becomes available to ship, please email us with your name and contact information and we will notify you when it is available. Feel free to contact the store for more details. All gear is in working order and has been tested unless otherwise noted. Items may require additional setup or adjustment depending on individual needs. Have gear to sell or trade? We are always buying. Email sales@musicgoroundaurora.com or text 303-627-0007 for an estimate.