Unleash Your Bass
Introducing the B2 FOUR Amp and Effects Emulator, powered with Zoom’s Multi-Layer IR technology and 6 iconic DI models. Now you can craft the perfect low-end tone.
Packed With Effects
Build patches from 104 effects, including models of famous boutique effects and preamps. Mix and match up to 5 effects and amps simultaneously to build your own custom patches.
Historic Bass Sounds
Preloaded with 250 presets, these patches are designed to give bassists the ability to recreate the sound of popular songs from the 50’s to today.
Input & Output Options
A balanced output helps you connect directly to a PA or interface while the stereo outputs can connect to an amp. The instrument input has a switch to change the impedance from 1M to 10M ohms, giving you a cleaner tone for upright basses equipped with piezo pickups.
Audio Interface
The B2 Four can be used as a 2-in/ 2-out audio interface by connecting to a computer or smartphone with your favorite effects and amp models.
Features:
- 6 built-in DI models: 3 tube and 3 solid state
- 11 realistic amp/cabinet models with newly developed Multi-Layer IR
- 11 preamp models (including 3 ZOOM original models)
- 82 bass effects including modeling of famous boutique pedals
- Analog input circuit with excellent low-frequency response
- Use up to 5 effects simultaneously
- 300 Patch Memories (250 Preset Patches with historic bass tones)
- 60 Second Looper + 68 rhythm patterns
- USB port for Handy Guitar Lab connection, 2-in/2-out audio interface and firmware updates
Specs
| Maximum number of simultaneous effects | 5 effects | |
| User patch memories | 300 | |
| A/D conversion | 24-bit 128× oversampling | |
| D/A conversion | 24-bit 128× oversampling | |
| Signal processing | 32-bit | |
| Frequency response | 20 Hz – 20 kHz (+0.5 dB/−0.5 dB) (10kΩ load) | |
| Display | 256×128 dot-matrix LCD | |
| Inputs | INPUT | Standard mono phone jack |
| Rated input level: −20 dBu | ||
| Input impedance (line): 1 or 10 MΩ (switchable) | ||
| AUX INPUT | Stereo mini jack | |
| Rated input level：–10 dBu | ||
| Input impedance (line)：10 kΩ | ||
| Outputs | LEFT/RIGHT | Standard mono phone jack |
| Maximum output level: +11.4 dBu (when output impedance 10 kΩ or higher) | ||
| BALANCED OUTPUT | XLR jack | |
| Impedance: 100 Ω (HOT-GND, COLD-GND) / 200 Ω (HOTCOLD) | ||
| GND LIFT (switchable) | ||
| PHONES | Stereo mini jack | |
| Maximum output power: 33 mW + 33 mW (into 32Ω load) | ||
| Input S/N | 124 dB | |
| Noise floor (residual noise) | LEFT/RIGHT | –96.0 dBu |
| BALANCED OUTPUT | –100.0 dBu | |
| PHONES: | –96.0 dBu | |
| Control input | FP02M input | |
| Power | AC adapter | 9V DC 500mA center negative (ZOOM AD-16) |
| • USB bus power is supported. | ||
| USB | USB 2.0 Type-C port (use cable that supports Type-C) | |
| Handy Guitar Lab: USB 1.1 Full Speed | ||
| Audio interface: USB 2.0 Full Speed, | ||
| 32-bit, 2-in/2-out | ||
| • Use a USB cable that supports data transfer. | ||
| Dimensions | 146 mm (D) × 249 mm (W) × 72 mm (H) | |
| Weight | 906 g | |
Note: 0 dBu = 0.775 V
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