A tight, bouncy square-and-pulse bass pushed hot into the mixer for grit, KB RLS holding each note at full level while the filter does the bouncing, with a pitch-drop "boing" on the attack. Bring the mod wheel up for pulse-width wobble. Macros: Squelch, Glide, Decay. Macro 8, Master, is the output level.

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 claimOpens: 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
The gallery
Every side of the panel, as the plugin draws it25–48 of 84
A dark, rolling sub: a triangle two octaves down, filtered low enough that only its round, near-sine fundamental comes through, with a quiet octave-up partner for definition and a soft onset so a rolling line doesn't click. Sits under a kick for long, held-out lines. Macros: Bright, Glide, Release. Macro 8, Master, is the output level.
The octave-jumping dance bass: hold one note and it bounces between the root and the octave above in sixteenths, on the song's tempo, a snappy saw and square with a short filter blip on every step. Hold two or three notes for a walking pattern; play harder for more blip. Macros: Cutoff, Decay, Gate, Body. Macro 8, Master, is the output level.
The relentless retro-synth bass: two saws pumping straight sixteenths on one held note, a little filter pluck on each. The Pedalboard splits it in two: one lane stays clean for the low end, the other drives an amp into a steep high-pass, so only its new harmonics join, and the line still reads on a phone. Hold the root and change it with the chords. Macros: Cutoff, Grit, Decay, Gate. Macro 8, Master, is the output level.
An acid line that plays itself: one resonant saw, up and back down over two octaves of whatever you hold, every sixteenth a squelch, with a short slide between steps. Hold a root with its minor third and seventh; harder notes squelch harder. Macros: Cutoff, Squelch, Decay, Drive. Macro 8, Master, is the output level.
A round, rolling bass in eighth-note triplets, up and back down through the notes you hold: a triangle with a quiet square under it, warm and deep, with a sub added below. Hold a root, its fifth and its octave over a straight beat and let the triplets roll against it. Macros: Cutoff, Sub, Decay, Gate. Macro 8, Master, is the output level.
A springy, metallic bass: osc 1's square modulates a triangle an octave above it, so each step clanks and then settles, bouncing up and down two octaves in swung sixteenths. Hold two or three low notes for a funky, rubbery figure. Macros: Clank, Cutoff, Decay, Swing. Macro 8, Master, is the output level.
A '90s garage/organ sub: a 16' triangle with a quiet 8' square riding an octave above it, the classic organ registration, and a short, punchy filter envelope over a KB RLS-held note so it still sustains like an organ. Play it short for the bounce, or hold it under the beat. Macros: Bright, Decay, Bite. Macro 8, Master, is the output level.
A clean, deep sub: one triangle through a closed ladder, held level by a compressor so every note weighs the same, the EQ cutting the rumble under it. Earth adds the sub's harmonics above 150 Hz, so the line still reads on a phone or a laptop. Play long notes from C2 to C4 under a kick. Macros: Grit brings in a square an octave up, Tone opens the filter, Punch adds envelope, Phone adds more of Earth's Body. Macro 8, Master, is the output level.
A squelching acid line that plays itself: sixteen sixteenths with slides and accents written in, the accented steps biting harder through the filter. Hold a key (C2 plays it as written) and move to other keys to transpose it; ride Cutoff and Squelch. Seq 2 is a busier variation. Macros: Cutoff, Squelch, Decay, Grit. Macro 8, Master, is the output level.
A driving rock gallop, an eighth and two sixteenths on every beat, two saws growling through the amp with the low end filled back in. Hold E1 or E2 to run it as written, and shift keys for the changes; it pairs with a straight kick. Macros: Cutoff, Amp, Low End, Gate. Macro 8, Master, is the output level.
A minimal techno sub on the offbeats, the space left for the kick: a round triangle with a soft square underneath and a quick filter blip, the octave jumping up on the last beat of the bar. Hold C2 and let it run under a four-on-the-floor kick. Macros: Cutoff, Blip, Sub, Length. Macro 8, Master, is the output level.
A syncopated funk line that carries on small speakers: the Pedalboard splits in two, one lane clean and round, the other driven hard through the amp with its lows cut, so only the new harmonics join the bass. Hold E2 for the groove as written; accents pop through the filter. Macros: Edge, Cutoff, Pop, Gate. Macro 8, Master, is the output level.
A bouncy electro-funk bass: a square with a saw on top, each step thrown up in pitch for a rubbery boing, the accented hits brighter and the octaves sliding into each other. Hold C2 and let it bounce; try Fwd/Bkwd for a new shape. Macros: Boing, Cutoff, Squeeze, Slide. Macro 8, Master, is the output level.
The tight, rolling psytrance bass: three clipped sixteenths after every kick, a saw snapping through a quick filter blip, with the clock at 142 when it runs on its own. Hold a key low on the keyboard (E1 to A1) and change it every few bars. Macros: Cutoff, Snap, Resonance, Gate. Macro 8, Master, is the output level.
A deep, warm dub bass walking a minor line in eighths, two soft triangles with the sub reinforced, long notes leaving room for the offbeat. Hold G1 or G2 for the line as written; rest a hand on the filter. Macros: Warmth, Cutoff, Sub, Length. Macro 8, Master, is the output level.
A huge, slow-blooming pedal bass: a saw an octave under a second, detuned saw, through the ladder with a long release so each note hangs as you lift off, warmed by a dark saturation. Play single held roots with your left hand, as a foot would. Macros: Detune, Cutoff, Release, Warmth. Macro 8, Master, is the output level.
The pedal bass with a woolly fuzz on its top only: the Pedalboard splits it at 160 Hz, the low band stays clean and the fuzz runs on the band above, so the two saws growl over a solid, unfuzzed floor. Hold roots and let the fuzz sustain them. Macros: Fuzz, Cutoff, Sub. Macro 8, Master, is the output level.
A pure triangle sub, nearly a sine, with Earth turned well up: it adds the note's 2nd to 6th harmonics above 150 Hz, so a phone or a laptop that cannot play the note still plays the line, while big speakers get the clean sub as it is. Play long notes from C1 to C3, then check it on a phone. Macros: Phone, Weight, Tone. Macro 8, Master, is the output level.
A round bass glowing warm: a saw over a triangle through an 18 dB ladder, then Pumice driven dark, so the lows thicken and the top stays smooth, with a little of Earth's Body to carry it onto small speakers. Play held roots and lazy lines; turn Heat up for a thicker, more compressed tone. Macros: Heat, Tone, Cutoff, Decay. Macro 8, Master, is the output level.
The rock bass a studio gets by running the bass twice: the Pedalboard splits it in parallel, one lane clean for a solid low end, the other through a cranked amp into a steep high-pass, so only the amp's growl joins on top. It cuts through guitars and still reads on a phone. Play driving eighths with a pick's evenness. Macros: Grit, Edge, Cutoff. Macro 8, Master, is the output level.
One bass cut into three bands, each treated apart: under 140 Hz it stays clean and solid, the mids from 140 Hz to 1 kHz run through Pumice for a warm growl, and the top above 1 kHz is fuzzed for a buzzing edge. The low end never smears however hard the top is driven. Play mid-tempo lines; ride Mids and Fuzz to rebalance it. Macros: Mids, Fuzz, Cutoff. Macro 8, Master, is the output level.
A soft square bass made to work on any speaker: Earth adds an octave under each note for weight on a big system, and the note's harmonics above 150 Hz so the line still reads on a phone, with Pumice warming it first. Play basslines from C2 to C3, where the octave under lands deep but audible. Macros: Weight, Phone, Cutoff. Macro 8, Master, is the output level.
Two saws a fifth of a semitone apart, the dark drum-and-bass Reese: the Pedalboard splits it at 140 Hz, so the low band stays clean and centred while the band above is saturated bright and spread wide by a chorus. Big on headphones, solid on a club system. Hold long notes and let the beating roll. Macros: Cutoff, Bite, Width. Macro 8, Master, is the output level.
Hybrid
Modern