Detail 01
Five simultaneous effects
Build a chain with up to five effects running together.
Product detailSKU #1500000267939
ZoomB1 FOUR Bass Multi-Effects Processor
bluespopfunk rockalternative
1/4
Independent shopping perspective
The Korena take
Zoom’s B1 FOUR puts bass effects, amp and cabinet models, drums, and looping into one compact processor. Build sounds from more than 70 effects, then save up to 50 user patches for recall. The 30-second looper supports unlimited overdubs for assembling layered parts, while 68 drum patterns provide a rhythm source for practice. Onstage, PRESELECT changes patches without altering the current sound; STOMP mode switches individual effects on and off.
Strong match
Who this is for
- Bass practice sessions that benefit from drum patterns and layered 30-second loop construction
- Live bass setups needing patch changes or individual effect switching during a song
- Players organizing several bass sounds across 50 user patch locations
Consider the trade-offs
When to look elsewhere
- Signal chains requiring more than five effects to operate at the same time
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
50 user patches
Keeps a set of saved bass sounds available for recall.
Detail 03
6.14 x 5.11 x 1.65 inches
Use these dimensions when planning pedalboard or desktop space.
Final check
Know before you order
- 01Choose a power method: four AA batteries, USB bus power, or the optional Zoom AD-16 AC adapter.
- 02The AD-16 requirement is 9V DC, 500mA, center negative.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can the B1 FOUR be used as a looper?
Yes. It records up to 30 seconds and allows unlimited overdubs.
02How do its live performance modes differ?
PRESELECT lets you select another patch without changing the current sound. STOMP mode turns individual effects on or off.
03Can I manage patches from a computer?
ZOOM Guitar Lab provides downloadable effects and can manage and back up patches.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Maximum Number of Simultaneous Effects
- 5
- Sampling Frequency
- 44.1 kHz
4 detailsConnections & power
- Maximum Output Level
- Line +2 dBu (10 kΩ or more output impedance)
- Power AC Adapter
- 9V DC 500mA center negative (ZOOM AD-16)
- Input Impedance Line
- 1kΩ
- Rated Input Level
- -10 dBu
2 detailsSize & weight
- Weight
- 0.75
- Dimensions
- 6.14 inch x 5.11 inch x 1.65 inch (156 mm x 130 mm x 42 mm)
2 detailsOther
- User Patches
- 50
- Signal Processing
- 32−bit
