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 Hardware theme

Hardware

The panel as a piece of gear: bat levers, round arcade buttons, gripped knobs on a printed plate.

49–72 of 84

BASSPumice Pluck

A short, fat pluck: saw and square snapped open by the envelope, then Pumice driven hard on its dark side, so each note lands thick and compressed with a smooth top, and Earth's Body keeps the tail heard on small speakers. Play tight eighths and sixteenths. Macros: Fat, Decay, Cutoff. Macro 8, Master, is the output level.

plucked · saturated · fat · punchy
BASSBoom Glide Sub

The long, sliding sub of trap and drill: a triangle with a short pitch drop on each note, held as long as the key, saturated warm so it growls a little, and Earth's Body so the slides read on a phone. Overlap notes to glide between them; hold each for its length. Macros: Glide, Grit, Phone, Drop. Macro 8, Master, is the output level.

sub · glide · saturated · trap
BASSFuzz Over Floor

A stoner-rock bass with the fuzz layered on top: the Pedalboard splits it in parallel, one lane a clean, round floor, the other a fuzz into a steep high-pass, so only the fuzz's buzz joins. The low end stays tight however hard the fuzz is pushed, and the line reads on a phone. Hold roots and let them ring. Macros: Fuzz, Edge, Cutoff. Macro 8, Master, is the output level.

fuzzy · stoner · split · small speakers
BASSGrowl Over Sub

A bass-music growl that never muddies its sub: the LFO swings a resonant ladder, and the Pedalboard splits the sound at 110 Hz, so the amp and a bright saturation chew only the band above while the sub under it stays clean and steady. Hold notes of a beat or more; Rate speeds the growl. Macros: Rate, Grind, Cutoff. Macro 8, Master, is the output level.

growl · wobble · driven · split
BASSBreathing PWM Sub

A square whose width breathes slowly from the LFO, over a triangle and a breath of pink noise: the classic small-monosynth sub, alive on held notes, with Earth's harmonics so it still reads on a laptop. Hold long notes to hear it move. Macros: Rate, Noise, Cutoff, Phone. Macro 8, Master, is the output level.

patched · sub · pwm · classic mono · moving · small speakers
BASSFlatwound Thump

Old flatwound strings and a foam mute: a triangle with a breath of square through a gentle 12 dB slope, each note thumping and dying away fast, warmed dark by Pumice, with Earth's Body so the thump is heard on a laptop and a slow compressor evening it. Play soul and sixties pop lines, notes held for their length. Macros: Warmth, Tone, Ring. Macro 8, Master, is the output level.

finger · warm · round · vintage
BASSSound System Sub

A dub sub for a big system: a soft triangle with a hint of square, Pumice warming it dark, Earth adding the octave under for weight and a little Body for small speakers, and a dark echo answering behind. Play slow, spacious roots on the offbeat; let the echo fill the gaps. Macros: Weight, Echo, Cutoff. Macro 8, Master, is the output level.

dub · sub · deep · echo · warm
BASSBitten Square

A square bass with bite: a square and a narrow pulse an octave up, Pumice saturating it on its bright side, so the harmonics come from the top and the note snaps through a dense mix while the low end stays smooth. Bright enough to read anywhere, so no Earth. Play busy, syncopated lines. Macros: Bite, Tone, Cutoff, Decay. Macro 8, Master, is the output level.

square · bright · saturated · punchy
BASSWide Top Bass

Wide where it can be, mono where it must: the Pedalboard splits two detuned saws at 200 Hz, the low band left clean and centred, the top chorused across the speakers. Lush on headphones, and it sums to mono without losing its weight. For synth-pop and slow, held lines. Macros: Width, Cutoff, Detune. Macro 8, Master, is the output level.

wide · stereo · chorus · split
BASSFloor Shaker

A cinematic low end that moves the floor: a triangle with a quiet saw an octave up, swelling in, Earth adding a strong octave under for weight and Body so it is felt even on a laptop, a compressor holding it level. Hold long low notes under a score, or a single note under a drop. Macros: Weight, Swell, Phone. Macro 8, Master, is the output level.

sub · cinematic · deep · heavy
BASSOctave Stack Bass

Two saws an octave apart, osc 2 held exactly twelve semitones above the sub, the knob's whole travel set to an octave. A thick, hollow bass that keeps its weight and still speaks on small speakers. Turn Detune with Range at 12 and an octave sits at the end of the knob. Macros: Cutoff, Upper, Drive. Macro 8, Master, is the output level.

octave · stacked · hollow · thick
BASSKeyed Pulse Bass

KB OUT into CUTOFF IN on top of 1:1 tracking: low notes are dark and round, high ones bright and nasal, so a line changes colour as it climbs. A slow LFO turns the pulse's width. Play lines that jump across two octaves. Macros: Cutoff, Bite, Rate. Macro 8, Master, is the output level.

patched · classic mono · pulse · key tracked
BASSWhirlpool Bass

A saw-and-square bass whose top lurches through Jacuzza while its bottom stays put: under 120 Hz the tub leaves it dry, so the weight holds while bubbles and jets churn over it, every swing a different height. Play a riff of held notes and let it turn. Macros: Churn, Swirl, Cutoff, Jets. Macro 8, Master, is the output level.

churning · phaser · moving · wobble
BASSThumb Funk

The round funk bass of the classic monos: one saw, the ladder low with no resonance, a quick envelope that closes to nothing while the note stays up, and Earth's harmonics so the round tail reads on small speakers. Play short, syncopated sixteenths and leave space. Macros: Cutoff, Env Amt, Decay. Macro 8, Master, is the output level.

funk · round · classic mono · punchy · small speakers
BASSElastic Funk

A squelchier funk bass: resonance up, a deeper, faster envelope and a square under the saw. Harder notes squelch more. Play it with dynamics, ghost notes soft and accents hard. Macros: Squelch, Decay, Cutoff. Macro 8, Master, is the output level.

patched · funk · squelchy · velocity
BASSRubber Walk

A bouncy, rubbery round bass that slides between overlapping notes, with a short slap echo behind it and Earth's harmonics so the line reads on small speakers. Play legato to slide, detached to jump; it walks well. Macros: Glide, Cutoff, Echo. Macro 8, Master, is the output level.

round · rubbery · glide · echo · small speakers
BASSProg Glide Bass

A singing, gliding bass for long prog lines: a saw and a detuned square slide between overlapping notes, with a light chorus spreading it. Play legato runs and let it swoop. Macros: Glide, Cutoff, Chorus. Macro 8, Master, is the output level.

prog · glide · chorus · classic mono
BASSWooden Upright

A woody, plucked upright: a triangle with a whisper of saw and noise for the finger, dying away like a string through a gentle 12 dB slope, in a small wooden room, with a little of Earth's harmonics so the walk is heard on a laptop. Play walking quarter notes; harder notes speak brighter. Macros: Ring, Tone, Room. Macro 8, Master, is the output level.

patched · upright · woody · plucked · round · small speakers
BASSFelt Round

A soft, rounded saw through the ladder at its gentlest slope, 6 dB: the harmonics are there but felted over, warmed by a gentle saturation, Earth's Body keeping it heard on a laptop, and a light squeeze holding it even. Warm under keys and vocals; play it sustained or short. Macros: Tone, Body, Squeeze, Warmth. Macro 8, Master, is the output level.

round · warm · soft · compressed · saturated
BASSSnap Pluck Bass

A short, snapping pluck: saw and square, the envelope slamming the ladder open and shut and the note gone in a quarter second, a hard squeeze on top. Play tight, repeated eighths. Macros: Decay, Cutoff, Snap. Macro 8, Master, is the output level.

plucked · short · punchy
BASSFinger Bass

An electric finger-style bass: a triangle with a narrow pulse for the string's edge, a gentle 12 dB slope and a long, natural decay, evened by a slow compressor, Earth's harmonics carrying it onto small speakers. Play it as a bassist would, notes held for their length. Macros: Tone, Edge, Decay. Macro 8, Master, is the output level.

finger · plucked · round · electric · small speakers
BASSPalm Mute Bass

A muted, thudding pick bass: the note is gone almost before it starts, with the faintest pitch dip on each pluck. Play fast, driving eighths; it stays tight at any tempo. Macros: Length, Cutoff, Thud. Macro 8, Master, is the output level.

patched · muted · plucked · short · tight
BASSHollow Pluck Bass

A hollow, nasal pluck: the mixer runs through the HPF before the ladder, so the low end is thinned and the pulses honk. Cuts through a busy mix; play staccato lines in the octave above C2. Macros: Hollow, Cutoff, Decay. Macro 8, Master, is the output level.

patched · plucked · hollow · nasal
BASSOctave Bounce

A disco-style octave bass: a saw with a square an octave above, a short filter snap over a held level. Play the root and its octave in alternating eighths. Macros: Cutoff, Octave, Decay. Macro 8, Master, is the output level.

octave · disco · bouncy · plucked