BOSS Waza Expander Core: Tame Your Tube Amp, Unleash Your Tone

NAMM 2025 BOSS Waza Expander Core- Tame Your Tube Amp, Unleash Your Tone
BOSS Waza Expander Core: Tame your tube amp, unleash your tone. Capture studio-quality sound at any volume with this powerful and versatile amp expander.

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BOSS has unveiled the Waza Expander Core, a refined and enhanced version of its acclaimed tube amp expander, designed to help guitarists tame the power of their beloved amplifiers while preserving their authentic tone and response.

Unleash Your Amp’s Potential

Following the announcement of the new BOSS VG-800 V-Guitar Processor, this little box is slightly more subdued but possibly more useful to most guitarists.

At the core of the Waza Expander Core lies a selectable Reactive Load circuit meticulously engineered to mirror the characteristics of your amplifier. This innovative technology ensures that your amp performs as intended, delivering the same dynamic response and rich harmonics, even when operating at lower volumes or connected directly to a recording interface.

BOSS Waza Expander Core
Reactive Load

Studio-Quality Recording

The Waza Expander Core is a recording powerhouse, equipped with a suite of features designed to capture studio-quality tones:

  • Air Feel: Adds a natural “amp-in-the-room” ambiance, eliminating the sterile sound often associated with direct recording.
  • Cabinet IRs: 22 meticulously captured cabinet emulations, including popular Celestion Digital IRs, provide a wide range of sonic textures.
  • Mix Assist: Optimizes the output for seamless integration into your DAW and effortless mixing.
BOSS WAZA Tube Amp Expander Core | Reactive Load Box |

 

Unleash Your Creativity

  • Reactive Drive Power Amp: Maintains full dynamic range, even at low volumes, allowing you to explore the nuances of your amp’s overdrive.
  • User IR Loading: 64 slots for loading your own custom IRs (WAV files up to 32-bit/96kHz) provides unparalleled flexibility and sonic experimentation.
  • Mic Simulation: Choose from five selectable microphone types and even mix two combinations for unparalleled mic placement flexibility.
  • Powerful Effects: Enhance your tone with a suite of customizable stereo effects, including compression, delay, reverb, and parametric/graphic EQ.
  • Rig Settings: Save up to 10 of your favorite tone combinations for instant recall.

 

NAMM 2025 BOSS Waza Expander Core rear panel
Connectivity

User-Friendly and Powerful

  • Dedicated Software: Streamlines audio editing, IR loading, and overall workflow.
  • MIDI Input: For seamless integration with MIDI controllers.
  • Mono FX Loop: With adjustable input level for optimal signal routing.

 

BOSS Waza Expander Core in the studio
In the studio

Compatibility

The Waza Expander Core supports tube amps up to 100 watts (please note: Mesa Boogie Dual/Triple Rectifiers are not supported).

Guitar Bomb Verdict

The Waza Expander Core represents a significant advancement in tube amp technology. By combining powerful reactive load technology with a suite of professional recording and creative features, BOSS has created a tool that empowers guitarists to unleash the full potential of their amplifiers while maintaining pristine tone and achieving professional recording results.

Preorder Open Now

More Information

This article may contain affiliate links to Gear4MusicThomann, and Andertons that help finance the running costs of GuitarBomb.  We will receive a small commission if you buy something through these links. Don’t worry; you pay the same price, and it costs you no extra to use these affiliate links for your purchases.

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