Donner B1 Reality Check: Acid with Punch by Stefan Gubatz

Stefan Gubatz kicks things off with a statement: The Donner B1 looks like a synth straight out of a Gameboy factory—long, slim, and not at all classic. If you’re expecting a visual 303 clone, you’ll be disappointed at first. Anthracite plastic housing, backlit buttons—at first glance, it’s more techno controller than acid legend.

But then comes the aha moment: sonically, the B1 packs a punch. Gubatz is seriously impressed by how authentically this little box squeals and squelches. Here, it’s not about looks, but what comes out of the speakers. So if you’re into acid charm and can let go of retro design, now’s the time to listen up.

Now it gets dirty: with the built-in saturator, you can turn tame patterns into an acid saw that would do any old club basement proud. Gubatz cranks the drive and suddenly the B1 growls and bites like a synth jumping out of the beat frying pan. The sound can be tweaked from dull to nasty—just the way we like it.

The delay also gets extra praise: it brings dubby space to the pattern without going into self-oscillation. Together with tricks like ratchet, gate length, and arpeggiator, this 303 clone becomes a creative playground. Sure, not every function is a must—but as soon as the reverb polishes the acid track, you know: this is more than just standard.

Stefan celebrates how the B1’s sound cuts through the mix. Compared directly to Behringer’s TD3, the Donner sounds upfront and present—no muddiness, just acid straight to your face. The operation is great, with clever details like the zero detent on the pitch knob. Small thing, big impact, especially when jamming live.

But the design? Gubatz just shrugs. For a 303 clone, it lacks that iconic case feel. Sure, as a techno tool the B1 convinces, but as an homage to the original look, it falls short. If you’re into style, you might not warm up to it—but for sound tinkerers, what comes out the back is what counts.