Zoom B1 FOUR Bass Multi-Effects Processor

The Zoom B1 FOUR and B1X FOUR take your low-end to new heights with over 70 effects and amp models, looper and a built-in rhythm section. Plus, access ZOOM Guitar Lab’s additional library of downloadable effects.

Key Features

• B1 FOUR offers over 60 built-in effects
• B1X FOUR offers over 70 built-in effects
• 9 amp models for simulating classic rigs
• Up to 5 effects can be used simultaneously, chained together in any order
• Built-in expression pedal for control over any parameter (B1X FOUR only)
• Looper for recording up to 30 seconds / 64 beats of CD-quality audio
• ZOOM Guitar Lab software for creating, editing and managing effects and patches
• 68 built-in rhythm patterns which can be used in conjunction with the Looper
• 50 memory locations for storing user-created patches
• Auto Save function for automatic saving of all patch parameters
• PRESELECT function allows silent patch selection while the current patch remains operational
• Onboard chromatic tuner
• Input jack accepts standard mono bass guitar cable (both active and passive instruments supported)
• Auxiliary input jack for connection of personal music players
• Output jack for connection to amp or headphones
• Lightweight and small enough to fit in your gig bag
• Easily integrated into any existing pedal board
• Runs on 4 AA batteries, with alkaline battery life of 18 hours
• USB port for firmware updates, power and connection to ZOOM Guitar Lab

Technical Specifications

Maximum number of simultaneous effect:
5
User patches:
50
Sampling frequency:
44.1 kHz
A/D conversion:
24-bit, 128× oversampling
D/A conversion:
24-bit, 128× oversampling
Signal processing:
32bit
Display:
128x32 dot matrix LCD
INPUT:
Standard mono phone jack
Rated input level: -20 dBu
Input impedance (line): 470 kOHM
AUX IN:
Stereo mini jack
Rated input level: -10 dBu
Input impedance (line): 1kOHM
OUTPUT
Standard stereo phone jack (combined line/headphone)
Maximum output level: Line +2 dBu (10 kOHM or more output impedance)
Headphones 17 mW + 17 mW (32OHM load)
Input S/N :
120 dB
Noise floor (residual noise):
-97 dBu
Power :
AC adapter: 9V DC 500mA center negative (ZOOM AD-16)
4 AA batteries (about 18 hours continuous operation time when using alkaline batteries with the LCD backlight off)
USB :
USB MIDI, USB Micro-B
Power can also be supplied through the USB port.
When using a cable designed only for power, other USB functions cannot be used.
External dimensions :
B1 FOUR
Height: 156 mm (D) × 130 mm (W) × 42 mm (H)
Weight: 340 g (excluding batteries)

B1X FOUR
Height: 156 mm (D) × 216 mm (W) × 52 mm (H)
Weight: 610 g (excluding batteries)

*Note: 0 dBu = 0.775 V
What’s in the Box
Here's what comes included:
B1 Four or B1X Four Bass
Multi-Effects Processor
Quick Guide
AA Batteries (x4)
Bass Patch List