Music Ideas Out of The Box: Donner Essential B1 synthesizer offers 128 presets for storing your music ideas. If you're new to electronic music, you can also benefit from its factory contents. With Song Mode (firmware V1.1.0), you can chain patterns to create more complex phrases.
Innovative Haptic Pads: Modern silicon haptic pads with dynamic color-changing backlights outperform the original 303's small buttons. Play synth basslines live or jam ideas with the 8-mode onboard arpeggiator.
Intuitive Step Sequencer: The sequencer is designed for simplicity. Instead of a complicated interface, B1 offers an intuitive solution for programming patterns without frustration.
Faithful To The Original: Essential B1 features live performance functions and a straightforward analog synthesis engine—1 VCO, 1 VCF, and 1 VCA—ensuring an authentic and organic sound path.
Analog Built-In Effects: Built-in analog saturation and delay effects enrich your tone with warmth and texture, delivering professional sound instantly.
Versatile Connectivity: Connect to your DAW via USB-C and use B1 as a MIDI controller. Includes full-size 5-pin MIDI I/O and Sync I/O for seamless integration with hardware setups.

Number of voices

Monophonic

VCF

1 low-pass

Envelope curves

1

Knobs

SATURATION knob, DRIVE knob, TONE knob, DELAY knob, LEVEL knob, TIME knob, FEEDBACK knob

Power input

DC input connector

USB (MIDI)

USB 2.0, Type C

Headphones

3.5 mm TRS

Inputs and outputs (TS 3.5 mm): AUX input

Maximum input +5 dBu, Sync input: More than 2.5 V

Type

Analog

Oscillators

1

Size

54*323*130mm; 0.62kg (1.37 lbs)

Control buttons

UP and DOWN, TRANSPOSE, PATTERN, TEMPO/TAP, PLAY/STOP, CLEAR, WRITE, BAR, SIGNATURE, DOTTED

MIDI IN/OUT

MIDI In & MIDI Out, 5-pin IN

Outputs

Line output: 1/4' TS

Supported operating systems

Win 7 or higher / Mac OS X 10.6.8 or higher

Power adapter 9VDC 500mA internal positive

Donner Essential B1 Analog Bass Synthesizer