Sweet Berta's panel

Semi-modular monophonic synth

Sweet Berta

One voice, patched your way. Two oscillators, a ladder filter, a sequencer and an arpeggiator, a patch bay of cables, and a spring reverb.

The launch

Free to claim

Opens: October 21, 2026 at 12:00 AM UTC. No closing date yet.

Sweet Berta installs with the Ozner Audio app and a free account. Get the app

AUVST3Standalone

The gallery

Every side of the panel, as the plugin draws it
The Front

The Front. Macros, the Case, the synth's modules, the Pedalboard and the keyboard, in the Hardware theme.

Three looks

Settings › Theme, any time: the sound never changes
The Front in the Hybrid theme

Hybrid

Slide switches, keycaps and knurled knobs: gear drawn flatter, still with a hand on it.

1–24 of 55

LEADEnvelope Sync Lead

The classic sync lead: +ENV OUT into osc 2 PITCH IN sweeps the synced osc 2 down from 18 semitones above on every note, a vocal tearing attack that settles as the envelope decays. Mod wheel for vibrato. Macros: Glide, Decay, Bite. Macro 8, Master, is the output level.

patched · sync · bright · glide · mod wheel
LEADSinging Lead

Two detuned saws through a moderately resonant ladder with key tracking, legato glide and vibrato on the mod wheel: a singing, expressive monophonic lead. Macros: Bright, Bite, Vibrato, Glide, Thick, Attack, Tail and Master.

detuned · glide · mod wheel
LEADNarrow Pulse Lead

Osc 1's narrow pulse (measured at 16% on the hardware) with osc 2's square an octave up: a reedy, nasal lead. The mod wheel adds pulse-width modulation to both. Macros: Glide, Bright, Bite. Macro 8, Master, is the output level.

nasal · pwm · glide · mod wheel
LEADSync Cascade

A bright, tearing arpeggio climbing three octaves in sixteenths: osc 2 hard-synced to osc 1, a slow LFO sweeping its tone so the pattern keeps changing colour, with a ping-pong echo in dotted eighths. Hold a triad high up and ride the mod wheel for vibrato. Macros: Sweep, Cutoff, Echo, Gate. Macro 8, Master, is the output level.

arp · sync · bright · echo
LEADPocket Console

The handheld-game chord: a thin pulse running through whatever you hold in thirty-second notes, so a held triad shimmers into one buzzing chord. Hold triads and change them on the beat; the mod wheel adds a game-style vibrato. Macros: Chop, Tone, Vibrato, Echo. Macro 8, Master, is the output level.

arp · chip · 8-bit · fast
LEADSpiral Fifths

A soaring lead that spirals: two saws a fifth apart, each step gliding into the next in eighth-note triplets, up two octaves and back down, through a chorus, a long echo and a hall. Hold two or three notes and let it sing; the mod wheel brings in vibrato. Macros: Glide, Bright, Space, Vibrato. Macro 8, Master, is the output level.

arp · fifths · glide · soaring
LEADSync Riff

A snarling sync riff in sixteenths: osc 2 hard-synced and swept down from high on every step, so each note tears in and settles, with a dotted-eighth echo trailing it. Hold A3 for the riff as written and move it with your other hand. Macros: Tear, Cutoff, Echo, Gate. Macro 8, Master, is the output level.

seq · sync · riff · aggressive
LEADSlide Hook

A singing synth-pop hook in eighths, square and saw slightly apart, the tied notes gliding into each other, in a light chorus, an echo and a plate. Hold C4 for the hook as written and change key for the next chord. Macros: Bright, Slide, Echo, Space. Macro 8, Master, is the output level.

seq · synth-pop · glide · hook
LEADAccent Wah Lead

A funky talking lead: every accented step opens the resonant filter like a wah pedal stamped down, the rest stay vocal and nasal. Hold E3 or E4 for the line as written, play other keys for the changes, and ride Cutoff. Macros: Cutoff, Resonance, Room, Gate. Macro 8, Master, is the output level.

seq · funk · wah · vocal
LEADThree Phrases

A singing saw lead with a gentle vibrato that carries a slow minor melody in three phrases, one in each sequence, in a hall with a quarter-note echo. Hold D4 for it as written; switch Seq 1, 2 and 3 to move through the phrases, each landing on the next bar. Macros: Bright, Vibrato, Echo, Space. Macro 8, Master, is the output level.

seq · melodic · singing · cinematic
LEADMajor Tenth Lead

A saw lead with a second voice a major tenth above it, an octave and a major third, a spacing the old seven-semitone Detune could not reach: Range at 18 puts the knob's end past it. Bright and singing, with vibrato on the mod wheel. Macros: Tenth, Bright, Space. Macro 8, Master, is the output level.

tenth · interval · bright · wide
LEADInterval Climb

A saw lead that climbs by interval: osc 2 starts a fifth above and the Interval macro runs its Detune up to an octave and a fifth, nineteen semitones, in one sweep, with the knob's travel set to Range 19. Turn it slowly for a rising harmony, fast for a siren of fifths. Macros: Interval, Cutoff, Space. Macro 8, Master, is the output level.

interval · glide · sweep · dramatic
LEADTake-Off Lead

A soaring saw lead flanged by Jacuzza's jets, a deep rush climbing and falling under every note. Take-Off does nothing until halfway, then holds Surge: the swirl speeds up and the jets deepen over a second and a half, then settle when it comes back down. Learn it to the mod wheel and pull it up for the take-off. Macros: Take-Off, Jets, Swirl, Bright, Glide, Space. Macro 8, Master, is the output level.

patched · jets · flanger · soaring · surge
LEADBig Mono Lead

The fat solo lead: two saws, one an octave down and a little detuned, pushed into the mixer's soft clip and through a resonant ladder that tracks the keys. Play single-note lines and lean on held notes; overlapping notes glide, the mod wheel adds vibrato. Macros: Bright, Bite, Vibrato, Glide, Room. Macro 8, Master, is the output level.

classic mono · fat · detuned · mod wheel
LEADHollow Square Lead

Two squares an octave apart through the gentler 12 dB slope: a hollow, woody lead with a little chorus around it. Clean, singable melodies sit well here; the mod wheel adds vibrato. Macros: Bright, Chorus, Vibrato, Release. Macro 8, Master, is the output level.

classic mono · square · hollow · mod wheel
LEADWoolly Fuzz Lead

A saw and a narrow pulse into Puzz's germanium fuzz, with a short slap echo behind: thick, ragged and sustaining, like a fuzz guitar solo. Hold notes and let them bloom; Cleanup rolls the fuzz back for a clearer verse. Macros: Fuzz, Cleanup, Echo, Bright. Macro 8, Master, is the output level.

fuzz · gritty · sustaining · mod wheel
LEADAmp Stack Lead

A square with a saw an octave above it, into Crank's amp with its mids filled in: a thick, forward rock lead that bites harder the harder you play the filter. Play bluesy lines and bend into notes. Macros: Gain, Tone, Bright, Room. Macro 8, Master, is the output level.

driven · rock · thick
LEADNasal Reed Lead

A narrow pulse squeezed between the high-pass filter and a resonant 12 dB ladder: a thin, reedy lead like a double reed. Mix Out runs through the HPF into the ladder. Play it legato in the middle register; the mod wheel adds vibrato. Macros: Nasal, Bright, Vibrato. Macro 8, Master, is the output level.

classic mono · nasal · reedy · patched · mod wheel
LEADBreath Flute Lead

A soft triangle with hybrid noise breathing under it, a slow swell and a gentle vibrato that is always on, in a bright plate: a flute-like lead. Play slow, legato melodies and let each note bloom. Macros: Breath, Air, Attack, Space. Macro 8, Master, is the output level.

flute · breathy · soft · vibrato · patched
LEADGrit Flutter Lead

A saw over a square sub, a resonant ladder jittered by sample-and-hold into its cutoff, and Zest's dirt on top: a gritty, restless lead that never sits still. Hold notes to hear the flutter; Flutter speeds the random steps up. Macros: Flutter, Bite, Dirt, Bright. Macro 8, Master, is the output level.

classic mono · gritty · sample and hold · patched
LEADCathedral Glide

The big prog portamento lead: two saws an octave apart that glide on every note, a slow swell, then echoes ping-ponging into a long hall. Play wide leaps slowly and let the glide carry you; add vibrato with the mod wheel on the held notes. Macros: Glide, Vibrato, Bright, Space. Macro 8, Master, is the output level.

prog · glide · epic · mod wheel
LEADAria Lead

A singing saw lead with a gentle attack, a vibrato that is always on, and a slide between overlapping notes: an operatic, vocal line. Play legato and slow, and let each note swell into its vibrato. Macros: Attack, Bright, Glide, Chorus. Macro 8, Master, is the output level.

singing · vibrato · glide · patched
LEADLonely Whistle

A pure triangle up high with a lazy vibrato and a slow slide, echoing into a hall: a whistled tune across an empty landscape. Play sparse melodies in the upper middle of the keyboard, overlapping notes to slide. Macros: Glide, Echo, Space. Macro 8, Master, is the output level.

whistle · pure · vibrato · glide · patched
LEADFifth Glide

Two saws a fifth apart, sliding together between overlapping notes, through a rich chorus: a big parallel-fifths lead. Play simple melodies and let the fifths do the harmony; the mod wheel adds vibrato. Macros: Glide, Fifth, Chorus, Bright. Macro 8, Master, is the output level.

fifths · glide · wide · mod wheel