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