Updated 13 May 2026
| Brand | Boss |
| Category | Guitars and Basses > Electric Guitar Amps > Guitar Amp Attenuators |
| Available at | 3 UK stores |
| 90-day avg | £1143.39 |
Boss
Boss WAZA Tube Amp Expander
£1139.00Fair Price
Cheapest at Gear4music · 3 stores
COMPARE PRICES — 3 OFFERS
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PRICE HISTORY
Current
£1118
Change
+19.6%
Avg
£1053
Low
£928
High
£1131
Volatility
4.7%
PRODUCT DESCRIPTION
- Boss WAZA Tube Amp Expander
- Control Centre for Tube Amplifiers
- Modern, variable reactive attenuator circuit for tube amplifiers up to 150 W
- Impedance settings for properly adjusting the load resistance of the amplifier
- Preserves the natural sound, the dynamic feel and the individual character of the distortion
- 10 Memory slots
- Versatile parameters controlled via GA-FC / FS foot pedals and MIDI
- Integrated 100 W Class AB power amplifier with discrete analogue design and seamless volume control
- Powerful DSP section
- Customisable stereo effects: Compressor
- Delay
- Reverb and four EQs
- 22 Speaker-box emulations with five selectable close mic and three surround microphone types plus four slots for uploading your own speaker impulse responses
- External effect loop with selectable serial / parallel operation and control input for switching the amplifier channels
- Parallel speaker output for connecting two speakers for live use
- Balanced XLR line outputs (mono and L / R stereo) for connecting a FOH mixing console, stage monitors and recorders
- Headphone output for quiet practice with fully turned up amplifier sounds
- Editor software (Mac / Windows)
- USB for direct audio recording and communication with the editor software
- Controls: Speaker Out
- Line Out
- Phones
- Resonance Z
- Presence Z
- Rig
- Reverb
- Buttons: Fx Loop
- Effects
- Solo / EQ
- Amp Ctl
- Switches: Speaker Impedance
- Input Level
- L / R Gnd Lift
- Mono (Foh) Gnd Lift
- Loop
- Level
- Send Gnd Lift
- Return Gnd Lift
- Amp Ctl
- LED: Power
- Write
- FX Loop
- Effects
- Solo / EQ
- Amp Ctl
- Input Sig / Peak
- Footswitch: Dimensions (W x D x H): 381 x 297 x 111 mm
- Weight: 6.8 kg@+*Connectors:*@+@+
- From tube amplifier: 6.3 mm jack
- Speaker Out A&B: 6.3 mm jack
- Line out L/R: XLR
- Line out mono: XLR
- Headphones: 6.3 mm stereo jack
- Send: 6.3 mm jack
- Return: 6.3 mm jack
- FX loop: 6.3 mm jack
- GA-FC: 6.3 mm stereo jack
- Amp Ctl: 6.3 mm jack
- USB B port
- MIDI: In
- Thru / Out