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Boss's mother load (box)

New take on reactive load box concept

Back in November, Boss announced the Waza Tube Amp Expander, a reactive load box with plenty of nicely thought-out hands‑on control, built-in cab simulation and connectivity options for use live and in the studio. At first glance, its features looked similar to those of UA’s OX, reviewed in SOS September 2018. However, Boss added several handy features, playing to their strengths as an amp and guitar tech manufacturer, such as footswitch control, an active 100W Class‑A/B power stage and built-in effects and processing — and the USB connection on the rear panel isn’t just for upgrades, but gives access a full USB audio interface, and allows detailed setup editing via a bundled software editor. Moreover, users will have the ability to apply their own IRs to the output. The Tube Amp Expander stores up to 10 rig settings including custom effects, EQ and cab/IR selections, and is compatible with any valve-based guitar amp with an output up to 150W.

At NAMM, SOS Editor-In-Chief Paul White stopped by at the BOSS booth to find out more, and was given a full demonstration; watch the video below!

The Tube Amp Expander is expected to ship in late Spring, priced at $1299 in the US. UK pricing has yet to be confirmed.

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