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.

25–48 of 313

BASSVelocity Sync

How hard you play sets how high the synced osc 2 sits: soft notes are round and plain, hard ones tear and bark, with a little envelope sweep on top. Play with dynamics, ghost notes soft and accents hard. Macros: Cutoff, Decay, Body. Macro 8, Master, is the output level.

patched · sync · velocity · dynamic
BASSWall Bass

Two saws, one an octave under, into a tiny amp turned all the way up in its dark voice: a huge, woolly wall of bass, the EQ clearing the mud beneath it. Hold roots and power through; the low notes rumble. Macros: Cutoff, Sub, Air. Macro 8, Master, is the output level.

driven · heavy · doom · amp
BASSAmp Into Ladder

The amp before the filter: Crank sits in the Case between the mixer and the ladder, so a fully driven square and saw are plucked by the filter envelope. Every note bites, then closes down to a dark, chewy growl. Play tight, syncopated lines. Macros: Gain, Cutoff, Decay. Macro 8, Master, is the output level.

patched · driven · plucked · amp · gritty
BASSPick Grind Bass

A picked rock bass with grind: a square and a saw, a bright pick on the attack, through a compressor's Dirt side for a gritty, even growl that sits in a band. Play driving eighths with a pick's evenness; harder notes click brighter. Macros: Dirt, Cutoff, Squeeze. Macro 8, Master, is the output level.

patched · driven · rock · picked · gritty · velocity
KEYS/PLUCKGlass Saw Pluck

The classic synth pluck: two saws a hair apart snapping shut through the 24 dB ladder, with a little resonance on the snap and a bright plate behind it. Play quick off-beat chords and arpeggios; harder notes open brighter. Macros: Ring, Bright, Space. Macro 8, Master, is the output level.

pluck · bright · classic · patched
KEYS/PLUCKPing-Pong Pluck

A round, woody square pluck at 12 dB that bounces from side to side: delay 1 answers on the left, delay 2 on the right a golden ratio later. Play sparse notes and leave room for the echoes to fill the gaps. Macros: Echo, Feedback, Bright, Decay. Macro 8, Master, is the output level.

pluck · echo · stereo · round · patched
KEYS/PLUCKChorus Pluck

A glossy, wide '80s pop pluck: saw and square through a gentle filter snap and a deep studio chorus spread past the speakers. Play bright chord stabs and quick sixteenth figures. Macros: Chorus, Bright, Decay, Space. Macro 8, Master, is the output level.

pluck · chorus · wide · eighties · glossy
KEYS/PLUCKNylon Pluck

A soft, nylon-string pluck: a triangle with a little saw for the string, a breath of pink noise for the fingertip, and a 12 dB filter closing as the note rings out in a wooden room. Play fingerpicked lines and broken chords; soft notes stay mellow. Macros: Ring, Tone, Finger, Room. Macro 8, Master, is the output level.

pluck · guitar · soft · woody · patched
BASSVelocity Filter Bass

KB VEL OUT into ENV AMT IN: harder notes add up to three more octaves of envelope sweep, so playing dynamics bright and soft notes dark. Velocity has no routing of its own on the voice; this patch gives it one. Macros: Cutoff, Bite, Decay. Macro 8, Master, is the output level.

patched · velocity
KEYS/PLUCKBright Harpsichord

A plucked, jangling harpsichord: a saw for the 8' string and a narrow pulse an octave up for the 4', thinned through the high-pass filter, each note ringing out and damped fast on release. Play ornamented lines and running baroque figures. Macros: Thin, Jangle, Ring, Hall. Macro 8, Master, is the output level.

harpsichord · baroque · bright · patched
KEYS/PLUCKFunk Clav

A bright, quacking clav: two narrow pulses through a resonant envelope snap, the lows trimmed by the high-pass filter and squeezed even. Play tight sixteenth-note rhythm parts and lift off quickly; dig in for more quack. Macros: Quack, Thin, Squeeze, Decay. Macro 8, Master, is the output level.

clav · funky · percussive · patched
KEYS/PLUCKMuted Clav

The clav with a felt mute on: a pulse and a triangle thumping short and round, all attack and no ring. Play choppy, syncopated comping under a groove, low in the keyboard. Macros: Open, Length, Bite. Macro 8, Master, is the output level.

clav · muted · funky · percussive
KEYS/PLUCKDrawbar Organ

A clean drawbar organ: two triangles at 8' and 4' with a quick key click, full while held and gone when you let go, spinning through a fast rotating-speaker swirl. Play legato chords and bluesy right-hand lines. Macros: Spin, Click, Upper, Room. Macro 8, Master, is the output level.

organ · drawbar · rotary · classic · patched
KEYS/PLUCKCombo Organ

A thin, reedy '60s combo organ: a square and a saw an octave up, buzzing through a bright filter and a choppy tremolo. Play stabbing garage-rock chords and a wiry riff high up. Macros: Tremolo, Reed, Speed. Macro 8, Master, is the output level.

organ · combo · reedy · sixties · tremolo
KEYS/PLUCKOverdrive Organ

A gritty rock organ: drawbar triangles at 16' and 8' pushed into a dirty squeeze, with a slow rotating swirl you can kick up to speed. Play heavy sustained chords and growling low riffs. Macros: Dirt, Spin, Growl, Room. Macro 8, Master, is the output level.

organ · overdrive · rock · rotary
KEYS/PLUCKTine Keys

A bell-toned electric piano: osc 1 frequency-modulates osc 2 at the same pitch for the struck tine, the filter closing as each note fades, the sides swaying in a slow stereo tremolo. Play soft, jazzy chords and let them ring; harder notes bark. Macros: Bark, Sway, Ring, Space. Macro 8, Master, is the output level.

electric piano · fm · mellow · tremolo · patched
KEYS/PLUCKReed Keys

A buzzy reed electric piano: a triangle and a soft square pushed into the mixer until they growl, through a bright velocity filter and a gentle volume tremolo. Play soulful two-hand comping; dig in and it snarls. Macros: Snarl, Tremolo, Tone, Room. Macro 8, Master, is the output level.

electric piano · reedy · tremolo · soulful · patched
KEYS/PLUCKPWM Keys

Warm, shifting square keys: the LFO slowly sweeps osc 1's pulse width against a steady square, and a chorus spreads them wide. Play held chords and slow melodies; the tone keeps moving under your hands. Macros: Motion, Chorus, Bright, Release. Macro 8, Master, is the output level.

pwm · warm · chorus · analog · patched
KEYS/PLUCKWorn Tape Keys

Soft keys off an old cassette: two triangles with a slow wow on their pitch, a hiss of hybrid noise, and gritty, wobbling echoes. Play simple, nostalgic chords and lazy melodies. Macros: Wow, Hiss, Echo, Tone. Macro 8, Master, is the output level.

lo-fi · tape · soft · nostalgic · patched
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
KEYS/PLUCKWood Marimba

A warm wooden marimba: a triangle struck by its own fourth harmonic through linear FM, the bar's knock dying fast into a round tone, in a small hall. Play bouncing mallet patterns and rolled chords in the middle of the keyboard. Macros: Knock, Ring, Mallet, Hall. Macro 8, Master, is the output level.

mallet · marimba · woody · fm · patched
KEYS/PLUCKMotor Vibes

A vibraphone with its motor on: soft triangles ringing long, a quiet octave above for the metal, and a round volume pulse from the spinning fans. Play cool jazz voicings and slow melodies and let them ring. Macros: Motor, Depth, Ring, Hall. Macro 8, Master, is the output level.

mallet · vibes · tremolo · jazzy
KEYS/PLUCKChapel Bell

A deep tubular bell: osc 1 modulates osc 2 at an inharmonic 3.5 to 1, so each strike blooms with clangy overtones that fade into a long hum in a big hall. Play single notes and slow fifths low down, and let every strike ring. Macros: Clang, Ring, Hall. Macro 8, Master, is the output level.

bell · fm · inharmonic · patched
KEYS/PLUCKMusic Box

A tiny wind-up music box: high triangle tines plucked by a faintly inharmonic FM shimmer, small and sweet, in a plate. Play lullaby melodies in the upper half of the keyboard. Macros: Shimmer, Ring, Space. Macro 8, Master, is the output level.

bell · music box · sweet · fm · patched