Zoom B1 Four Bass Guitar Multi Effects

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 :
32−bit

Display:
128x32 dot matrix LCD

INPUT
INPUT :
Standard mono phone jack
Rated input level: -20 dBu
Input impedance (line): 470 kΩ

AUX IN :
Stereo mini jack
Rated input level: -10 dBu
Input impedance (line): 1kΩ

OUTPUT
Standard stereo phone jack (combined line/headphone)
Maximum output level: Line +2 dBu (10 kΩ or more output impedance)
Headphones 17 mW + 17 mW (32Ω 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