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.

73–96 of 313

KEYS/PLUCKBrass Stab

Two saws with a slower attack into a closed ladder the envelope opens: a synth-brass swell and stab. Macros: Bright, Swell, Release. Macro 8, Master, is the output level.

brass · stab
PADWarm Strings

A slow string section: two saws a few cents apart, each spread across the speakers, through a soft 12 dB ladder, a rich chorus and a bright plate. Hold chords' top notes and let each one bow in; move slowly between notes. The mod wheel adds a gentle vibrato. Macros: Attack, Bright, Chorus, Space. Macro 8, Master, is the output level.

strings · warm · slow · wide · mod wheel
PADHollow Pulse Pad

A hollow, reedy pad: osc 1's narrow pulse slowly widening and narrowing on the LFO, a quiet triangle under it, thinned by the HPF and set far back in a dark hall. Play slow, sustained notes in the middle of the keyboard. Macros: Motion, Cutoff, Hall. Macro 8, Master, is the output level.

patched · pwm · hollow · dark
PADBreath Pad

Air with a note inside it: hybrid noise breathing under a soft saw and triangle, a gentle chorus and a warm hall. Play long notes and let the breath swell in; more Noise turns it into a whisper. Macros: Noise, Attack, Cutoff. Macro 8, Master, is the output level.

breathy · airy · soft · noise
PADDeep Drone

A drone that never stops: the VCA on Drone, so it sounds with no key down. A 32' saw and a 16' square through a low, resonant ladder that a very slow LFO opens and closes, each side a little apart, into a long hall. Play a key to set its pitch, then play over it on another instrument; turn VOLUME down to silence it. Macros: Motion, Cutoff, Spread. Macro 8, Master, is the output level.

drone · dark · sub · evolving · patched
PADFeedback Bloom

A warm pad that thickens as it sustains: the finished voice fed back into its own mixer through EXT IN, so the two saws saturate and bloom against the ladder's resonance. Hold notes and listen to it grow; more Feedback makes it rawer. Macros: Feedback, Cutoff, Resonance. Macro 8, Master, is the output level.

patched · feedback · warm · saturated
PADLong Sweep Pad

A slow resonant sweep that takes fourteen seconds to come round: the LFO on the cutoff at its slowest, the two sides sweeping a little apart, into ping-pong echoes and a hall. Hold one note for a long time and let it evolve. Macros: Sweep Rate, Resonance, Echo. Macro 8, Master, is the output level.

patched · evolving · resonant · sweep
PADSpring Swell

A pad that swells up out of Big Red's springs: a saw with a quiet saw an octave above, its ladder opening with the slow attack and settling back, drenched in spring and a light chorus. Play slow chords' top notes and let each swell finish. Macros: Spring, Swell, Bright. Macro 8, Master, is the output level.

swell · spring · warm · slow
PADOpen Fifths

Every key an open fifth: a triangle and, a fifth above it, a soft saw, each spread across the speakers, in a wide, distant hall. Play single notes and slow movements for big, cinematic chords from one finger. Macros: Fifth, Bright, Space. Macro 8, Master, is the output level.

fifths · cinematic · wide · open
PADVowel Choir

A wordless choir: a saw and a narrow pulse an octave up through the HPF into a resonant ladder, a band like a sung vowel, with a soft vibrato always on and a deep chorus. Play slow melodies or long notes; Vowel moves the band from 'oo' toward 'ah'. The mod wheel deepens the vibrato. Macros: Vowel, Air, Space. Macro 8, Master, is the output level.

patched · choir · vocal · mod wheel
PADEbb Pad

A pad that rises and falls like slow waves: Undertow's lamp-soft tremolo, each side a little behind the other, over a saw and a square, into a hall. Hold notes and let them pulse; Rate takes it from a slow ebb to a shimmer. Macros: Rate, Depth, Space. Macro 8, Master, is the output level.

tremolo · pulsing · warm · wide
PADPWM Pad

Two squares with the LFO patched into osc 1 PWM IN: a slow, always-moving pulse width that chorus-thickens a soft pad. The mod wheel adds PWM to osc 2 as well. Macros: Bright, Rate, Release. Macro 8, Master, is the output level.

patched · pwm · soft · mod wheel
PADCircling Pad

A dark pad that slowly circles the room: a 16' triangle and a soft saw, chorused, then swayed from one speaker to the other by Undertow every four seconds, into a hall. Best on headphones or wide speakers; hold low chords' roots. Macros: Orbit, Cutoff, Space. Macro 8, Master, is the output level.

autopan · dark · wide · slow
PADFrozen Haze

Glassy triangles an octave apart, frozen into a haze: a swirling chorus, deep wobbling ping-pong echoes and a near-endless hall. Play sparse, slow notes and let them pile up; Freeze stretches the hall to twenty seconds. A slow square LFO patched into Geode's HOLD freezes the echoes for half of every twelve seconds. Macros: Freeze, Echo, Haze. Macro 8, Master, is the output level.

ambient · ethereal · wide · spaced
PADVelvet Night

A deep, soft pad for late at night: a 16' triangle under a saw, through a closed ladder with the gentlest chorus and a dark, distant hall. Play low, slow chords' roots and fifths. The mod wheel brings in a slow filter sway. Macros: Cutoff, Attack, Space. Macro 8, Master, is the output level.

dark · soft · warm · mod wheel
PADBrass Swell Pad

A soft brass section swelling in: two saws through a closed ladder that the slow envelope opens brassy and lets settle, in a lightly chorused room. Play held chords' top notes, a little before the beat. Macros: Bloom, Attack, Space. Macro 8, Master, is the output level.

brass · swell · warm
PADFaded Tape Pad

A pad off a worn cassette: a triangle and a saw with a slow wow on their pitch, a hiss of hybrid noise, gritty 12-bit echoes and a soft chorus. Play simple, nostalgic chords' top notes and let it drift. Macros: Wow, Hiss, Echo. Macro 8, Master, is the output level.

patched · lo-fi · tape · nostalgic
PADSub Bloom

A pad you feel more than hear: a 32' and a 16' triangle, softly opening through the ladder, a narrow chorus that keeps the lows in the middle and a short-bassed hall. Play low, held notes under a track that needs weight. Macros: Cutoff, Attack, Space. Macro 8, Master, is the output level.

sub · deep · soft · warm
PADStereo Saw Wall

A wide wall of saws: each oscillator spread as far across the speakers as it goes, the two sides' cutoffs apart, the drift loose, through all three deeper chorus modes and a plate. Hold big notes, low or high, for a sound that fills the stereo field. Macros: Spread, Bright, Space. Macro 8, Master, is the output level.

wide · detuned · big · bright
PADGlass Halo

A clear, glassy halo: a triangle with a quiet triangle two octaves up, the low end thinned, bright ping-pong echoes and a long shimmering plate. Play high, slow melodies and let the echoes ring. The mod wheel adds vibrato. Macros: Shimmer, Echo, Space. Macro 8, Master, is the output level.

glassy · bright · ethereal · mod wheel
PADSlow Saw Pad

Two saws detuned about 20 cents with extra drift, a slow attack and a long release, the ladder low and warm. The mod wheel brings in a slow filter sweep. Macros: Bright, Release, Bite. Macro 8, Master, is the output level.

detuned · warm · dark · slow · mod wheel
PADSinging Bowl

A struck and held singing bowl: a triangle frequency-modulates a second triangle tuned to an uneven overtone, so every note rings with a metallic shimmer that settles into a soft hum, in a long hall. Play single notes and let each ring for several seconds; low notes sound like bigger bowls. Macros: Strike, Ring, Space. Macro 8, Master, is the output level.

patched · metallic · fm · meditative
PADRain Glass

Rain on a window: the sample and hold steps a resonant ladder to a new place seven times a second, so a held note glitters with bright, random overtones, scattered by ping-pong echoes into a plate. Hold long notes in the middle and upper keys. Macros: Rate, Glitter, Echo. Macro 8, Master, is the output level.

patched · random · glittery · resonant
PADSync Aurora

Slow northern lights: osc 2 hard-synced to osc 1 while a slow LFO sweeps its pitch, so the overtones rise and fall like a moving vowel over eight seconds, the two sides' filters a little apart, through a chorus and a hall. Hold one note and let it shimmer. Macros: Sweep Rate, Colour, Space. Macro 8, Master, is the output level.

patched · sync · evolving · bright