Donner Essential B1 Analog Bass Synthesizer & Sequencer

Small, sharp, and full of character — the Donner Essential B1 is a pint-sized analogue bass synth and sequencer that knows exactly what it’s doing. Whether you’re laying down acid basslines, building groove-based live sets, or adding a gritty bottom end to your DAW sessions, the B1 delivers classic mono synth tones with modern features built in.

At its core, the B1 is fully analogue — complete with a single oscillator (saw or square), classic low-pass filter, decay envelope, and built-in drive and delay. It's warm, it's buzzy, it's alive — just like a good bass synth should be. Need more bite? The saturation circuit adds the growl, and the delay adds space and bounce to bring your patterns to life.

The 16-step sequencer is easy to program and perform with. You’ve got real-time control over slide, accent, ratcheting, gate length — the full works. Whether you're stepping in acid-style grooves or chaining patterns together in Song Mode, this thing responds quickly and encourages creative jamming. You can even trigger patterns from the built-in silicone performance pads, which double as keys and sequencing input.

And the connectivity? Surprisingly grown-up. You’ve got full-size MIDI In/Out for syncing with your other gear, USB-C for audio and MIDI integration with your DAW, Sync In/Out for modular or drum machine use, and a standard ¼" output with a headphone jack. There’s even an AUX input so you can blend in an external sound source and run it through the B1’s delay or saturation for extra fun.

The Donner B1 is the kind of synth that makes you want to create. It doesn’t bog you down with menus or overwhelm you with complexity — it just sounds good, feels fun to use, and slides easily into live or studio setups. Perfect for electronic musicians, producers, synth-curious guitarists, or anyone wanting to explore proper bass synthesis without blowing the budget.

Features

• Fully analogue signal path: single oscillator (saw/square), low-pass filter, decay envelope

• Built-in saturation and delay effects for character and depth

• 16-step sequencer with per-step slide, accent, gate length and ratchet control

• Arpeggiator and Song Mode for extended creative use

• 128 factory presets + 128 user preset slots

• Silicone touch pads with backlighting for playing and sequencing

• USB-C for MIDI/DAW integration and firmware updates

• 5-pin MIDI In & Out, Sync In & Out, AUX input

• ¼" main output and headphone jack

• Compact, portable, and designed for hands-on performance