Detail 01
16 impedance settings
Lets you precisely match the tube amp’s output transformer.
Product detailSKU #1500000267566
BOSSWaza Tube Amp Expander Attenuator
1/5
Independent shopping perspective
The Korena take
WAZA Tube Amp Expander puts reactive loading, a 100W Class AB power stage, cabinet/IR processing, effects, EQ, and multi-output routing around a tube guitar amp of up to 150W. Its 16 impedance settings let you match the amp’s output transformer while controlling overall volume. In practice, it can send cab-emulated or IR-based stereo line signals to PA, monitors, and recording equipment while driving up to two speaker cabinets.
Strong match
Who this is for
- Running a tube amp at its tonal sweet spot while managing overall volume.
- Sending simultaneous speaker-cab, PA, monitor, recording, and headphone feeds.
- Saving separate stage or studio rigs with effects, EQ, cab, IR, and MIDI settings.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
100W Class AB power stage
Drives up to two cabinets through parallel speaker outputs.
Detail 03
10 rig setups
Stores custom effects, EQ, cabinet/IR, MIDI, and related settings for recall.
Detail 04
22 cabinets; five mic types each; four user IR slots
Provides cabinet/microphone selections for line outputs and space for four loaded IRs.
Detail 05
7.87 x 3.9 x 7.95 in.; 4.85 lb
Physical dimensions and listed weight.
Final check
Know before you order
- 01Use only with a tube guitar amplifier rated at 150W or below.
- 02Match the selected impedance setting to the amplifier’s output transformer.
- 03GA-FC recall and real-time control require the optional GA-FC foot controller.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can it record directly?
Yes. Stereo line outputs with cabinet emulation or IRs can feed recording devices, and it also provides USB output.
02What effects are built in?
It includes compressor, delay, and reverb, plus four EQ sections including a switchable solo boost.
03Can it power speaker cabinets?
Yes. Its built-in 100W power stage feeds up to two cabinets through parallel speaker outputs.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- Power
- 100W (Class AB)
2 detailsSize & weight
- Dimensions Wxhxd
- 7.87 inch x 3.9 inch x 7.95 inch
- Weight
- 4.85
