Turn Any Bass Into a Sub That Moves Air. No Layering. No Guesswork.

Get the deep, physical low end you feel on every club record and chart-topping beat. Thin bass is the fastest way to make a great track sound amateur, and stacking sub layers by hand takes hours you do not have. Load UltraLow XL on your bass, 808 or full mix, and it builds the missing bottom octave for you. Raw idea to release-ready low end in seconds.

Instant Sub in 4 Simple Steps

1. Load UltraLow XL on your synth, bass, 808 or even vocals
2. Pick a preset, or raise the Bass Stack and Sub Engine mixes
3. Set Mono Freq so everything below it stays locked to the centre
4. Press play. Your bass now hits on every system, from club rigs to phone speakers.

That's it. No layering sessions, no manual, no weak low end.

Gain an Unfair Advantage in Low-End Production

Two sub generators, two completely different flavours. Bass Stack duplicates your signal and drops it one octave, two octaves, or both at once, for weight that follows every note you played. Sub Engine tracks the pitch of your bass in real time and lays a synthesised sub underneath it, playing the exact same notes with a choice of five waveforms: Sine, Wavefolded Sine, Triangle, Low-passed Square and Low-passed Saw. Solo either one to hear exactly what you are adding.

Audible on speakers that cannot make bass. The Enhance module generates the harmonic series of your sub content, so laptops, phones and earbuds report the fundamental your listener never actually hears. Your low end translates everywhere instead of vanishing outside the studio.

21 mastering-grade FX modules built in. Everything you would normally reach for after a bass booster is already here, laid out across seven pages, each with its own input, output and wet/dry mix:

• Movement: Wobbler (vibrato), Rumbler (tremolo), Shaker (auto-panner) and Phased, a phaser retuned to sweep the 40 Hz to 1 kHz region instead of the mids
• Harmonics: Enhance, Excite, Warmth (tube and transformer curve), Tape with three machine types, plus Odd Sat and Even Sat for surgical control over which harmonic family you add
• Shape: Balance tilt EQ, passive-style Tone, LoShelf, LoBand and a resonant LoPass tuned for the bass range
• Dynamics: FET Comp with switchable 4:1 to 20:1 ratios, program-dependent Opto Comp, and Limit with five clip curves from hard to silky
• Character and space: Bitcrush, Degrade and a Width module with bass-mono protection

Your low end never wanders. One global Mono Freq control, adjustable from 20 Hz to 500 Hz, feeds every module that touches stereo. Modulation, phasing and width all work above the crossover only, so you get motion and space up top while the sub stays dead centre and club-ready.

See what you are adding. A real-time spectrum analyser shows input against output, and dedicated visualisers for Bass Stack, Sub Engine and every modulation module let you watch the shape you are dialling in rather than guessing at it.

Built to survive a real session. Up to 8x oversampling, Fast and High quality modes so you can track light and render heavy, phase invert, an analog mode modelled from measured hardware, click-free bypass and sample-accurate host-reported latency. Nothing shifts, nothing clicks, nothing needs a re-render.

Whether you are a producer chasing a club-ready drop, a beatmaker sculpting 808s, or an engineer rescuing a mix with no bottom end, UltraLow XL gives you low end that used to take a rack of gear and a stack of plugins. Instantly.

Get UltraLow XL today and make your bass hit on every system.

In the box

• Formats: VST3, AU, AAX and Standalone for Windows and macOS
• Presets: Includes 250 Professional Factory Presets
• 23 modules in one plugin: Bass Stack, Sub Engine and 21 mastering-grade FX, each with independent in, out and mix
• MIDI-Learn on every control: map any knob to a hardware controller with a right-click
• Solo buttons on both sub generators so you can audition the added low end on its own
• Global Mono Freq crossover from 20 Hz to 500 Hz, respected by every stereo-aware module
• Up to 8x oversampling, phase invert, analog mode and Fast / High quality switching
• Fully resizable interface with real-time input and output spectrum analysis
• Click-free bypass and sample-accurate, host-reported latency