The B1 synthesiser & sequencer features all of the classic synth's deep bass and acid synthesiser sounds but brings it back in a more intuitive format. Giving you the perfect combination of retro and new school cool.

Music Ideas Out of The Box
Donner Essential B1 synthesiser 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 colour-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.

Analogue Built-In Effects
Built-in analogue 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.

Specifications
Type: Analogue
VCF: 1 low pass
Oscillators: 1
Size(L/W/H): 32.5 x 12 x 5.6 cm 0.62kg (1.37 lbs)
Weight: 0.62kg (1.37 lbs)
Control Knobs: SATURATION knob, DRIVE knob, TONE knob, DELAY knob, LEVEL knob, TIME knob, FEEDBACK knob
Control Buttons: UP and DOWN, TRANSPOSE, PATTERN, TEMPO/TAP, PLAY/STOP, CLEAR, WRITE, BAR, SIGNATURE, DOTTED
Power Input: DC input connector
Power Adaptor: 9VDC 500mA inner positive
MIDI IN/OUT: MIDI In & MIDI Out, 5-pin IN
USB (MIDI): USB 2.0, Type C
Outputs: Line output: 1/4' TRS
Headphones: 3.5mm TRS
Supported Operating Systems: Win 7 or higher / Mac OS X 10.6.8 or higher
Inputs & Outputs (TS 3.5mm): AUX in: maximum input +5 dBu, Sync in: More than 2.5V
Number of Voices: Monophonic

Portable Synthesisers

Donner ESSENTIAL Analog Bass Synthesiser and Sequencer